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Complete the sentence so that it uses personification. We watched through the window as the autumn wind () the withered leaves about the yard.
[ "chased", "scattered" ]
0
closed choice
grade10
language science
writing-strategies
Creative techniques
Use personification
Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point. The trees danced in the wind. The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, the personification suggests that the trees are moving.
Complete the sentence with the word chased. It describes the wind as if it were a person who was running and playing.
Using only these supplies, which question can Tisha investigate with an experiment?
[ "Do apple slices turn brown more quickly if they are dipped in sugar or in orange juice?", "Do slices of pear turn brown more quickly than slices of banana?", "Do apple slices dipped in orange juice turn brown more slowly than plain apple slices?" ]
2
Tisha is making a fruit salad. She mixes some apple slices with orange and pineapple slices, and leaves the rest of the apple slices on the counter. A few minutes later, she notices that the apple slices on the counter have turned brown. She wonders what factors affect how quickly sliced fruit turns brown. So, she decides to design an experiment. She has the following supplies available: two apples two bananas orange juice a kitchen knife
closed choice
grade8
natural science
science-and-engineering-practices
Designing experiments
Identify questions that can be investigated with a set of materials
Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment. Imagine that you are wondering if plants grow to different heights when planted in different types of soil. How might you decide what supplies are necessary to conduct this experiment? First, you need to identify the part of the experiment that will be tested, which is the independent variable. This is usually the part of the experiment that is different or changed. In this case, you would like to know how plants grow in different types of soil. So, you must have different types of soil available. Next, you need to identify the part of the experiment that will be measured or observed, which is the dependent variable. In this experiment, you would like to know if some plants grow taller than others. So, you must be able to compare the plants' heights. To do this, you can observe which plants are taller by looking at them, or you can measure their exact heights with a meterstick. So, if you have different types of soil and can observe or measure the heights of your plants, then you have the supplies you need to investigate your question with an experiment!
Which text uses the word nauseous in its traditional sense?
[ "Everyone seemed to enjoy the magnolia-scented candle, but it made Larry feel rather nauseous.", "Everyone seemed to enjoy the magnolia-scented candle, but Larry found the smell rather nauseous." ]
1
closed choice
grade10
language science
writing-strategies
Word usage and nuance
Explore words with new or contested usages
Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner. When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be more commonly used, many people consider a word's traditional definition to be the correct usage. Being able to distinguish the different uses of a word can help you use it appropriately for different audiences. Britney perused her notes, carefully preparing for her exam. The traditional usage above is considered more standard. David perused the magazine, absentmindedly flipping through the pages. The nontraditional usage above is now commonly used, but traditional style guides generally advise against it.
The second text uses nauseous in its traditional sense: causing disgust or nausea. Everyone seemed to enjoy the magnolia-scented candle, but Larry found the smell rather nauseous. The first text uses nauseous in its nontraditional sense: feeling disgusted or nauseated. Everyone seemed to enjoy the magnolia-scented candle, but it made Larry feel rather nauseous. Most style guides recommend to use the traditional sense of the word nauseous because it is considered more standard.
Answer the riddle. I am a pet. I like to wag my tail. I bark. What am I?
[ "a cat", "a dog" ]
1
closed choice
grade1
language science
vocabulary
Comprehension strategies
What am I?
A dog is a pet. A dog likes to wag its tail. A dog barks.
What do these two changes have in common? rust forming on a metal gate making jam
[ "Both are caused by cooling.", "Both are chemical changes.", "Both are caused by heating.", "Both are only physical changes." ]
1
closed choice
grade8
natural science
chemistry
Chemical reactions
Compare physical and chemical changes
Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule. In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. As paper burns, paper molecules react with oxygen molecules in the air. This reaction breaks the chemical bonds in the molecules. The atoms then link together in a different way to form different molecules. For example, carbon dioxide molecules are formed when paper burns. In a physical change, chemical bonds do not break. The types of molecules in matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, water vaporizing is a physical change that can be caused by heating. Liquid water and water vapor are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Rust forming on a metal gate is a chemical change. As the gate rusts, the metal turns into a different type of matter called rust. Rust is reddish-brown and falls apart easily. Making jam is a chemical change. It involves mixing fruit, sugar, and a substance called pectin. When these ingredients are mixed and cooked, the chemical bonds in their molecules are broken. The atoms then link together to form different molecules that make up the jam. Step 2: Look at each answer choice. Both are only physical changes. Both changes are chemical changes. They are not physical changes. Both are chemical changes. Both changes are chemical changes. The type of matter before and after each change is different. Both are caused by heating. The reaction that makes jam is caused by heating. But rust forming on a metal gate is not. Both are caused by cooling. Neither change is caused by cooling.
Complete the sentence. The Fourth Amendment says that the government needs to have () before it can search a person.
[ "a good reason", "a declaration of war", "proof of a crime", "a large army" ]
0
closed choice
grade4
social science
civics
Government
The Bill of Rights
The Fourth Amendment says that the government needs to have a good reason before it can search a person or his or her property. The Fourth Amendment says that "unreasonable searches" are not allowed. It is not always clear what makes a search "unreasonable." But a search for no reason is definitely unreasonable! However, the government doesn't need proof of a crime before searching someone. The government just has to have a good reason to believe a crime has taken place. Police officers and other government employees search people every day. There are many good reasons the government might have to search someone. For example, the person might be acting in a suspicious or strange way. Or a police officer might see something against the law before the search. It is often hard to know if the government has a good enough reason to do a search. Often a judge will have to decide. The full text of the Fourth Amendment is below. How can a police officer or other member of the government get the right to search someone? The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
Is a house a good or a service?
[ "a good", "a service" ]
0
closed choice
grade2
social science
economics
Economics
Goods and services
Everything you can buy is either a good or a service. A good is something you can touch or hold in your hands. For example, a hammer is a good. A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service.
To decide whether a house is a good or a service, ask these questions: Is a house something you can touch? Yes. Is a house a job you might pay someone else to do? No. So, a house is a good.
Which figure of speech is used in this text? I've heard that Marie & Co. is downsizing, so I'm happy to see that their store in downtown Greenville will remain open for now.
[ "hyperbole", "euphemism" ]
1
closed choice
grade12
language science
figurative-language
Literary devices
Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic. The head of Human Resources would never refer to firing people, only to laying them off. Hyperbole is an obvious exaggeration that is not meant to be taken literally. I ate so much that I think I might explode! An oxymoron is a joining of two seemingly contradictory terms. Some reviewers are calling this book a new classic. A paradox is a statement that might at first appear to be contradictory, but that may in fact contain some truth. Always expect the unexpected.
The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic. Downsizing is an indirect way of saying that the company is planning on firing employees, closing shops or branches, and/or reducing its budget.
What does the allusion in this text suggest? With the gutters clogged and water rising in the streets, Julie, who was watching the storm from her window, commented, "We're going to need an ark to get out of here."
[ "Julie wants to protect her possessions.", "Julie thinks the storm will cause major flooding." ]
1
closed choice
grade9
language science
figurative-language
Literary devices
Interpret figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. An allusion is a brief reference to something or someone well known, often from history or literature. "I'd better get home before I turn into a pumpkin!" Lila remarked.
The text uses an allusion, a brief reference to someone or something well known. The allusion to an ark suggests that Julie thinks the storm will cause major flooding. In the Bible, it rains for forty days and forty nights; Noah, his family, and animals of every species survive the great flood in an ark that he builds.
Which text uses the word factoid in its traditional sense?
[ "A reporter for the Fairfax Daily Mail dug up an amusing factoid about Fairfax's founder while researching for an article about the town's early years.", "The Fairfax Daily Mail was forced to issue a retraction after printing a factoid about Fairfax's founder. It turned out that the reporter had written the article based on local legend rather than researching the actual history." ]
1
closed choice
grade10
language science
writing-strategies
Word usage and nuance
Explore words with new or contested usages
Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner. When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be more commonly used, many people consider a word's traditional definition to be the correct usage. Being able to distinguish the different uses of a word can help you use it appropriately for different audiences. Britney perused her notes, carefully preparing for her exam. The traditional usage above is considered more standard. David perused the magazine, absentmindedly flipping through the pages. The nontraditional usage above is now commonly used, but traditional style guides generally advise against it.
The first text uses factoid in its traditional sense: something made up presented as a true fact. The Fairfax Daily Mail was forced to issue a retraction after printing a factoid about Fairfax's founder. It turned out that the reporter had written the article based on local legend rather than researching the actual history. The second text uses factoid in its nontraditional sense: a trivial but true fact. A reporter for the Fairfax Daily Mail dug up an amusing factoid about Fairfax's founder while researching for an article about the town's early years. Most style guides recommend to use the traditional sense of the word factoid because it is considered more standard.
Is the following trait inherited or acquired? Jane has a scar on her left hand.
[ "inherited", "acquired" ]
1
Hint: Most scars are caused by accidents during a person's life.
closed choice
grade4
natural science
biology
Traits and heredity
Identify inherited and acquired traits
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.
Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait.
What is the mass of a pair of goggles?
[ "5 pounds", "5 ounces", "5 tons" ]
1
Select the best estimate.
closed choice
grade4
natural science
units-and-measurement
Units and measurement
Choose customary units of mass
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Mass is a measurement of how much matter something contains. There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or tons. There are 16 ounces in 1 pound and 2,000 pounds in 1 ton. So, 1 ounce is less than 1 pound and much less than 1 ton. A slice of bread has a mass of about 1 ounce, while a can of beans has a mass of about 1 pound. A small car has a mass of about 1 ton.
The best estimate for the mass of a pair of goggles is 5 ounces. 5 pounds and 5 tons are both too heavy.
Which figure of speech is used in this text? For the rare and radiant maiden whom the angels name Lenore . . . —Edgar Allen Poe, "The Raven"
[ "assonance", "paradox" ]
0
closed choice
grade12
language science
figurative-language
Literary devices
Classify the figure of speech: review
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses. We are united. We are powerful. We are winners. Antithesis involves contrasting opposing ideas within a parallel grammatical structure. I want to help, not to hurt. Apostrophe is a direct address to an absent person or a nonhuman entity. Oh, little bird, what makes you sing so beautifully? Assonance is the repetition of a vowel sound in a series of nearby words. Try to light the fire. Chiasmus is an expression in which the second half parallels the first but reverses the order of words. Never let a fool kiss you or a kiss fool you. A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic. The head of Human Resources would never refer to firing people, only to laying them off. Hyperbole is an obvious exaggeration that is not meant to be taken literally. I ate so much that I think I might explode! An oxymoron is a joining of two seemingly contradictory terms. Some reviewers are calling this book a new classic. A paradox is a statement that might at first appear to be contradictory, but that may in fact contain some truth. Always expect the unexpected. Understatement involves deliberately representing something as less serious or important than it really is. As you know, it can get a little cold in the Antarctic.
The text uses assonance, the repetition of a vowel sound in a series of nearby words. The words rare, radiant, maiden, angels, and name share a vowel sound.
Which is a compound sentence?
[ "Earth is one of eight planets in our solar system.", "The company lowered its costs, so it won't have to close." ]
1
closed choice
grade3
language science
grammar
Sentences, fragments, and run-ons
Is the sentence simple or compound?
A simple sentence is a sentence with only one subject and predicate. The pitcher threw the ball to first base. A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so. The pitcher threw the ball, and the batter hit it. Some simple sentences have a compound subject or a compound predicate, but they are not compound sentences. Anna and James will watch the fireworks tonight. This simple sentence has a compound subject, Anna and James. The singers bowed and walked off the stage. This simple sentence has a compound predicate, bowed and walked off the stage. Some simple sentences have introductory phrases, but they are not compound sentences. The introductory phrase is part of the predicate. In the winter, Farmer Ben wears his heavy coat. This is a simple sentence. There is one subject, Farmer Ben, and one predicate, wears his heavy coat in the winter.
The second sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction so. The company lowered its costs, so it won't have to close.
Which word would you find on a dictionary page with the following guide words? upward - utensil
[ "urge", "uniform" ]
0
closed choice
grade6
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since urge is between the guide words upward - utensil, it would be found on that page.
What is the source of the allusion in the sentence below? Scarlett told her friends that Juan was a typical Peter Pan type.
[ "Greek mythology", "literature" ]
1
closed choice
grade8
language science
figurative-language
Literary devices
Recall the source of an allusion
An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words. "I'd better get home before I turn into a pumpkin!" Lila remarked. Here, Lila alludes to the fairy tale "Cinderella," in which Cinderella must leave the ball before the coach that brought her transforms into a pumpkin. The allusion shows that Lila must depart immediately.
The source of the allusion Peter Pan is literature. In a J. M. Barrie novel, the character Peter Pan retreats to Neverland and refuses to grow up. The allusion Peter Pan means a person who won't take on adult responsibilities.
Select the item that doesn't belong.
[ "rope", "string", "ribbon", "glue" ]
3
closed choice
grade3
language science
vocabulary
Categories
Select the words that don't belong
Glue doesn't belong. String, rope, and ribbon all name items that you can tie things with.
According to Newton's third law, what other force must be happening?
[ "The disc magnet is pulling on the bar magnet.", "The disc magnet is pushing on the bar magnet." ]
1
Isaac Newton was born in the 1600s and studied how objects move. He discovered three fundamental laws about forces and motion. According to Newton's third law, for every force, there is an equal and opposite force. Consider the following force: A bar magnet is pushing on a disc magnet.
closed choice
grade8
natural science
physics
Velocity, acceleration, and forces
Predict forces using Newton's third law
According to Newton's third law, for every force, there is an equal and opposite force. This means that if one object is applying a force on a second object, the second object must also be applying a force on the first object, but in the opposite direction. For example, if your hand is pushing down on a table, the table is also pushing up on your hand. Or, if you are pulling forward on a rope, the rope is also pulling back on you.
The bar magnet is pushing on the disc magnet. So, Newton's third law tells you that the disc magnet is pushing on the bar magnet.
What does the idiom in this text suggest? Norma submitted her suggestions to Bruce; now the ball is in his court.
[ "Bruce has some difficult work to do.", "Bruce needs to act next." ]
1
closed choice
grade6
language science
figurative-language
Literary devices
Interpret figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. An idiom is an expression that cannot be understood literally. Its meaning must be learned. The assignment was a piece of cake.
The text uses an idiom, an expression that cannot be understood literally. The idiom the ball is in his court suggests that Bruce needs to act next. In tennis, when the ball is in a player's court, it is that person's turn.
Which closing is correct for a letter?
[ "Your Niece,\nAmy", "Your niece,\nAmy" ]
1
closed choice
grade2
language science
capitalization
Capitalization
Greetings and closings of letters
A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue. Dear Aunt Sue, I'm glad you could come to my party, and thank you for the birthday gift. I could not have asked for a better one! Every time I see it, I think of you. With love, Rory
The first closing is correct: Its first word is capitalized, and it ends with a comma.
Compare the motion of three blue jays. Which blue jay was moving at the lowest speed?
[ "a blue jay that moved 400kilometers west in 10hours", "a blue jay that moved 405kilometers south in 10hours", "a blue jay that moved 335kilometers east in 10hours" ]
2
closed choice
grade3
natural science
physics
Force and motion
Compare the speeds of moving objects
An object's speed tells you how fast the object is moving. Speed depends on both distance and time. Distance tells you how far the object has moved. One unit used to measure distance is the kilometer. Time tells you how long the object has spent moving. One unit used to measure time is the hour. Think about objects moving for the same amount of time. The object that is moving the slowest will go the shortest distance in that time. It is moving at the lowest speed.
Look at the distance each blue jay moved and the time it took to move that distance. The direction each blue jay moved does not affect its speed. Notice that each blue jay moved for 10 hours. The blue jay that moved 335 kilometers moved the shortest distance in that time. So, that blue jay must have moved at the lowest speed.
Complete the statement. Assume that the water balloon's mass did not change. The gravitational potential energy stored between the water balloon and Earth () as the water balloon fell toward Jeremiah.
[ "stayed the same", "decreased", "increased" ]
1
Read the text about an object in motion. Layla dropped a water balloon off a balcony. The water balloon fell toward her friend Jeremiah, who was standing below the balcony.
closed choice
grade6
natural science
physics
Kinetic and potential energy
Identify changes in gravitational potential energy
Gravitational potential energy is stored between any two objects. So, for every object on or near Earth, there is gravitational potential energy stored between the object and Earth. The amount of gravitational potential energy stored between an object and Earth depends on the mass of the object. The amount of gravitational potential energy also depends on the distance between the object and the center of Earth. This distance increases when the object moves higher and decreases when the object moves lower. If the distance between an object and the center of Earth changes, the gravitational potential energy stored between the object and Earth will change. The table below shows how this change can happen. When an object's mass stays the same and its distance from the center of Earth... | Gravitational potential energy stored between the object and Earth... increases | increases decreases | decreases stays the same | stays the same
Think about how the distance between the water balloon and the center of Earth changed. Jeremiah was lower than the balcony. As the water balloon fell toward Jeremiah, the distance between the water balloon and the center of Earth decreased. So, the gravitational potential energy stored between the water balloon and Earth decreased as the water balloon fell toward Jeremiah.
Using only these supplies, which question can Tisha investigate with an experiment?
[ "Do larger basketballs bounce higher than smaller basketballs on a brick patio?", "Does the basketball bounce higher on gravel or on grass?", "Does the basketball bounce higher on a lawn or on a dirt path?" ]
1
Tisha gets a basketball for her birthday and dribbles it around her neighborhood. She notices that sometimes the ball bounces higher than other times. She wonders what factors affect how high her ball bounces. So, she decides to design an experiment. She has the following supplies available: one basketball access to a brick patio access to a grassy lawn access to a gravel driveway a meterstick
closed choice
grade7
natural science
science-and-engineering-practices
Designing experiments
Identify questions that can be investigated with a set of materials
Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment. Imagine that you are wondering if plants grow to different heights when planted in different types of soil. How might you decide what supplies are necessary to conduct this experiment? First, you need to identify the part of the experiment that will be tested, which is the independent variable. This is usually the part of the experiment that is different or changed. In this case, you would like to know how plants grow in different types of soil. So, you must have different types of soil available. Next, you need to identify the part of the experiment that will be measured or observed, which is the dependent variable. In this experiment, you would like to know if some plants grow taller than others. So, you must be able to compare the plants' heights. To do this, you can observe which plants are taller by looking at them, or you can measure their exact heights with a meterstick. So, if you have different types of soil and can observe or measure the heights of your plants, then you have the supplies you need to investigate your question with an experiment!
Which sentence states a fact?
[ "Most Australians live in cities on the southeast coast, such as Sydney and Melbourne.", "The cities on the southeast and southwest coasts of Australia are too crowded." ]
0
closed choice
grade8
social science
civics
Social studies skills
Identify facts and opinions
A fact is something that can be proved true by research or observation. George Washington became president of the United States in 1789. This statement is a fact. It can be proved by researching what year George Washington was inaugurated president. An opinion is something that a person believes, thinks, or feels. An opinion can be supported by evidence, but it cannot be proved true. George Washington was a better president than Thomas Jefferson. This statement is an opinion. People can have different ideas about what makes someone a "better" president, so the statement cannot be proved.
The first sentence states a fact. Most Australians live in cities on the southeast coast, such as Sydney and Melbourne. It can be proved by checking a population density map, or a map showing the populations in different areas, of Australia. The second sentence states an opinion. The cities on the southeast and southwest coasts of Australia are too crowded. Too crowded shows what a person believes, thinks, or feels. Another person might have a different opinion about how crowded is too crowded.
Which text uses the word literally in its traditional sense?
[ "Desmond's new kitten—barely three weeks old—was literally the size of a softball; it could just about fit in the palm of his hand.", "Desmond's new kitten—barely three weeks old—was literally just a ball of fluff in the palm of his hand." ]
0
closed choice
grade12
language science
writing-strategies
Word usage and nuance
Explore words with new or contested usages
Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner. When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be more commonly used, many people consider a word's traditional definition to be the correct usage. Being able to distinguish the different uses of a word can help you use it appropriately for different audiences. Britney perused her notes, carefully preparing for her exam. The traditional usage above is considered more standard. David perused the magazine, absentmindedly flipping through the pages. The nontraditional usage above is now commonly used, but traditional style guides generally advise against it.
The second text uses literally in its traditional sense: in a factual, non-exaggerated way. Desmond's new kitten—barely three weeks old—was literally the size of a softball; it could just about fit in the palm of his hand. The first text uses literally in its nontraditional sense: nearly or in effect (often exaggerated). Desmond's new kitten is not actually just a ball of fluff. Desmond's new kitten—barely three weeks old—was literally just a ball of fluff in the palm of his hand. Most style guides recommend to avoid using the nontraditional sense of the word literally because it is generally considered incorrect.
What does the verbal irony in this text suggest? "Sleeping through the rooster's crowing was no problem," Jim joked with a yawn.
[ "Jim slept well.", "Jim slept poorly." ]
1
closed choice
grade10
language science
figurative-language
Literary devices
Interpret figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking down. Each breakdown is as enjoyable as a punch to the face.
The text uses verbal irony, which involves saying one thing but implying something very different. Sleeping through the rooster's crowing was no problem ironically suggests that Jim slept poorly. Jim was tired, so the rooster's crowing was clearly a problem.
What does the verbal irony in this text suggest? He looked about as inconspicuous as a tarantula on a slice of angel food cake. —Raymond Chandler, Farewell, My Lovely
[ "He was well hidden.", "He stood out." ]
1
closed choice
grade9
language science
figurative-language
Literary devices
Interpret figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking down. Each breakdown is as enjoyable as a punch to the face.
The text uses verbal irony, which involves saying one thing but implying something very different. As inconspicuous as a tarantula on a slice of angel food cake suggests that he stood out. A large spider on a piece of light-colored cake would not be inconspicuous at all; it would be very obvious.
Which object has less thermal energy?
[ "a cherry pie at a temperature of 30°C", "a cherry pie at a temperature of 40°C" ]
0
The objects are identical except for their temperatures.
closed choice
grade3
natural science
physics
Heat and thermal energy
How is temperature related to thermal energy?
All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy. Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both less thermal energy and a lower temperature.
The two cherry pies have the same mass but different temperatures. Since the 30°C pie is colder than the 40°C pie, it has less thermal energy.
What information supports the conclusion that Amy inherited this trait?
[ "Amy and her mother both wear their hair in braids.", "Amy's parents have red hair. They passed down this trait to Amy." ]
1
Read the description of a trait. Amy has red hair.
closed choice
grade4
natural science
biology
Traits and heredity
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.
What do these two changes have in common? boiling sugar to make caramel roasting a marshmallow over a campfire
[ "Both are only physical changes.", "Both are caused by cooling.", "Both are caused by heating." ]
2
closed choice
grade8
natural science
chemistry
Chemical reactions
Compare physical and chemical changes
Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule. In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. As paper burns, paper molecules react with oxygen molecules in the air. This reaction breaks the chemical bonds in the molecules. The atoms then link together in a different way to form different molecules. For example, carbon dioxide molecules are formed when paper burns. In a physical change, chemical bonds do not break. The types of molecules in matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, water vaporizing is a physical change that can be caused by heating. Liquid water and water vapor are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Boiling sugar to make caramel is a chemical change. The heat causes the sugar to change into a different type of matter. Unlike sugar, the new matter is brown and sticky. Roasting a marshmallow is a chemical change. The type of matter on the outside of the marshmallow changes. As a marshmallow is roasted, it turns brown and crispy. Step 2: Look at each answer choice. Both are only physical changes. Both changes are chemical changes. They are not physical changes. Both are chemical changes. Both changes are chemical changes. The type of matter before and after each change is different. Both are caused by heating. Both changes are caused by heating. Both are caused by cooling. Neither change is caused by cooling.
What is the volume of a water balloon?
[ "19 cups", "19 fluid ounces", "19 gallons" ]
1
Select the best estimate.
closed choice
grade5
natural science
units-and-measurement
Units and measurement
Choose customary units of volume
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Volume is a measurement of how much space something takes up. There are many different units of volume. When you are using customary units, volume may be written in units of fluid ounces, cups, or gallons. As the diagram shows, there are 8 fluid ounces in 1 cup and 16 cups in 1 gallon. So, 1 fluid ounce is less than 1 cup and much less than 1 gallon. A glass of milk has a volume of about 8 fluid ounces, or 1 cup. A jug of milk has a volume of 1 gallon.
The best estimate for the volume of a water balloon is 19 fluid ounces. 19 cups and 19 gallons are both too much.
What is the mass of a school bus?
[ "14 pounds", "14 ounces", "14 tons" ]
2
Select the best estimate.
closed choice
grade4
natural science
units-and-measurement
Units and measurement
Choose customary units of mass
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Mass is a measurement of how much matter something contains. There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or tons. There are 16 ounces in 1 pound and 2,000 pounds in 1 ton. So, 1 ounce is less than 1 pound and much less than 1 ton. A slice of bread has a mass of about 1 ounce, while a can of beans has a mass of about 1 pound. A small car has a mass of about 1 ton.
The best estimate for the mass of a school bus is 14 tons. 14 ounces and 14 pounds are both too light.
How long is an apple seed?
[ "6 kilometers", "6 centimeters", "6 millimeters" ]
2
Select the best estimate.
closed choice
grade4
natural science
units-and-measurement
Units and measurement
Choose metric units of distance
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. When you are using metric units, length can be written with units of millimeters, centimeters, meters, or kilometers. One meter contains 100 centimeters or 1,000 millimeters. So, 1 meter is larger than 1 centimeter, and 1 centimeter is larger than 1 millimeter. The tip of the pencil shown here is only 1 millimeter wide, but the pencil is about 16 centimeters long. A red fox is about 1 meter long. The Sydney Harbour Bridge in Australia is about 1,000 meters, or 1 kilometer, in length.
The best estimate for the length of an apple seed is 6 millimeters. 6 centimeters and 6 kilometers are both too long.
Which word would you find on a dictionary page with the following guide words? clear - crooked
[ "chimney", "convince" ]
1
closed choice
grade7
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since convince is between the guide words clear - crooked, it would be found on that page.
Is the student text plagiarized?
[ "Yes, because it fails to use quotation marks.", "No, it is not plagiarized.", "Yes, because it fails to cite the source.", "Yes, because it fails to use quotation marks and fails to cite the source." ]
2
Compare the student text with the source. Source: Bob Brooke, "Oregon Trail: Wagon Tracks West." Published in Wild West Apr. 2000. Between 1841 and 1866 about 350,000 people used what had become the most famous wagon route across America. It is no wonder that, in places, ruts along the Oregon Trail are still visible today. Student text: Ruts from wagon wheels are still visible in the Oregon Trail today, which is not surprising given that "between 1841 and 1866 about 350,000 people used what had become the most famous wagon route across America."
closed choice
grade11
language science
writing-strategies
Research skills
Identify plagiarism
Plagiarism is the act of taking another person's work or ideas and presenting them as your own, either accidentally or on purpose. When you use an outside source in your own writing, you should make sure to cite the source in order to avoid plagiarism. Consider the following source: Fisher, Goddu, and Keil, "Searching for Explanations: How the Internet Inflates Estimates of Internal Knowledge." Copyright 2015 by the American Psychological Association The results of these experiments suggest that searching the Internet may cause a systematic failure to recognize the extent to which we rely on outsourced knowledge. Searching for explanations on the Internet inflates self-assessed knowledge in unrelated domains. If you use a direct quotation in your writing, you must use quotation marks around the exact words that were copied from the source, in addition to citing the source. Researchers have found that relying on the Internet for information may cause a systematic failure to recognize the extent to which we rely on outsourced knowledge. This sentence is plagiarized because it uses the source's exact words without quotation marks and without properly citing the source. Researchers have found that relying on the Internet for information "may cause a systematic failure to recognize the extent to which we rely on outsourced knowledge" (Fisher, Goddu, and Keil). If you paraphrase a source, or put a source's ideas into your own words, you must still cite the source. Even if properly cited, a paraphrase that is too similar to the source in wording or sentence structure is still considered plagiarized. According to Fisher, Goddu, and Keil, searching the Internet can lead to a regular failure to perceive the extent to which we rely on outside knowledge. This sentence is plagiarized because it is an insufficient paraphrase. Even though it is properly cited, it borrows too much of the source's wording and sentence structure. According to Fisher, Goddu, and Keil, relying on the Internet to look up information can make it difficult for us to estimate how much of our knowledge comes from internal versus external sources. There are different rules about how to format citations, such as when to include page numbers for print sources. Check a style guide, such as the Modern Language Association (MLA) Handbook, for a complete list of these rules.
The student text is plagiarized. Although it uses quotation marks around the source's exact words, it fails to cite the source. Ruts from wagon wheels are still visible in the Oregon Trail today, which is not surprising given that "between 1841 and 1866 about 350,000 people used what had become the most famous wagon route across America." Source: Bob Brooke, "Oregon Trail: Wagon Tracks West." Published in Wild West Apr. 2000. Between 1841 and 1866 about 350,000 people used what had become the most famous wagon route across America. It is no wonder that, in places, ruts along the Oregon Trail are still visible today.
Which text uses the word unique in its traditional sense?
[ "Beth's collection of handmade pottery was featured in last week's edition of the Georgetown Journal, which identified her as \"one of the most unique young artists to debut this year.\"", "Each vase and bowl in Beth's collection of handmade pottery is unique. The colors and designs reflect both her cultural heritage and her individual artistic style." ]
1
closed choice
grade12
language science
writing-strategies
Word usage and nuance
Explore words with new or contested usages
Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner. When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be more commonly used, many people consider a word's traditional definition to be the correct usage. Being able to distinguish the different uses of a word can help you use it appropriately for different audiences. Britney perused her notes, carefully preparing for her exam. The traditional usage above is considered more standard. David perused the magazine, absentmindedly flipping through the pages. The nontraditional usage above is now commonly used, but traditional style guides generally advise against it.
The second text uses unique in its traditional sense: being the only one of its kind. Each vase and bowl in Beth's collection of handmade pottery is unique. The colors and designs reflect both her cultural heritage and her individual artistic style. The first text uses unique in its nontraditional sense: interesting or unusual. Beth is a distinctive artist, but might not be one of a kind. It may be helpful to remember that if unique is modified by an adverb—as in most unique, very unique, or quite unique—it is probably being used nontraditionally. Beth's collection of handmade pottery was featured in last week's edition of the Georgetown Journal, which identified her as "one of the most unique young artists to debut this year." Most style guides recommend to use the traditional sense of the word unique because it is considered more standard.
Is there a surplus or a shortage of cupcakes?
[ "surplus", "shortage" ]
1
A bakery has 75 cupcakes for sale. The cupcakes cost $1 each. At that price, 200 people want to buy one.
closed choice
grade5
social science
economics
Supply and demand
Identify shortage and surplus
There is a surplus if there is too much for sale at a given price. There is a shortage if there is not enough for sale at a given price. Surpluses and shortages usually happen when people who are selling goods or services charge too much or too little. When the price is too high, consumers will not want to buy much of the good or service. The quantity demanded will be less than the quantity supplied. So, there will be a surplus. When the price is too low, too many consumers will want to buy the good or service. The quantity demanded will be more than the quantity supplied. So, there will be a shortage.
At the current price, there are not enough cupcakes for sale. There are 75 cupcakes for sale, but 200 people want to buy one. So, there is a shortage of cupcakes.
Using only these supplies, which question can Edna investigate with an experiment?
[ "Do sunflowers grow taller if they are planted in planter boxes or in pots?", "Do sunflowers grow bigger in sunny planter boxes or in shady planter boxes?", "Which type of sunflower grows more leaves?" ]
1
Edna wants to grow sunflowers in her backyard garden. She notices that some sunflowers grow much taller than others. She is curious about what factors affect how sunflowers grow. So, she decides to design an experiment. She has the following supplies available: seeds from one type of sunflower soil one wooden planter box in the sun one wooden planter box in the shade one plastic planter box in the sun water
closed choice
grade8
natural science
science-and-engineering-practices
Designing experiments
Identify questions that can be investigated with a set of materials
Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment. Imagine that you are wondering if plants grow to different heights when planted in different types of soil. How might you decide what supplies are necessary to conduct this experiment? First, you need to identify the part of the experiment that will be tested, which is the independent variable. This is usually the part of the experiment that is different or changed. In this case, you would like to know how plants grow in different types of soil. So, you must have different types of soil available. Next, you need to identify the part of the experiment that will be measured or observed, which is the dependent variable. In this experiment, you would like to know if some plants grow taller than others. So, you must be able to compare the plants' heights. To do this, you can observe which plants are taller by looking at them, or you can measure their exact heights with a meterstick. So, if you have different types of soil and can observe or measure the heights of your plants, then you have the supplies you need to investigate your question with an experiment!
Select the one animal that has all of the bony fish traits listed above.
[ "Red salamanders do not have lungs! They can breathe through their moist, smooth skin. Adult red salamanders live near rivers or ponds. They lay eggs with no shells under rocks or logs. The baby red salamanders live underwater.", "Japanese red rockfish live in the Pacific Ocean. They have a bony skeleton and fins. They hatch from eggs with no shells. Rockfish are carnivorous. Carnivorous animals are adapted to eat other animals." ]
1
Bony fish are a group of animals with similar traits. The following traits can be used to identify bony fish: They have fins, not limbs. They live underwater. They have a skeleton made of bone. They make eggs with no shells. Observe the animals and read the descriptions.
closed choice
grade5
natural science
biology
Classification
Use evidence to classify animals
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live. How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.
To decide if an animal is part of a group, look at the traits of the group. Bony fish have the following traits: They have fins, not limbs. They live underwater. They have a skeleton made of bone. They make eggs with no shells. Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits. A red salamander has the following traits: It spends part of its life in water and part on land. It has moist skin. It makes eggs with no shells. A red salamander does not have all of the traits of a bony fish. A red salamander is an amphibian. A Japanese red rockfish has the following traits: It has fins, not limbs. It lives underwater. It has a skeleton made of bone. It makes eggs with no shells. A Japanese red rockfish has the traits of a bony fish. A Japanese red rockfish is a bony fish.
Which of the following contains a vague pronoun reference?
[ "As David was walking with his friend Bob, he tripped on the uneven sidewalk.", "As David was walking with his friend Bob, Bob tripped on the uneven sidewalk." ]
0
closed choice
grade11
language science
writing-strategies
Pronouns
Identify vague pronoun references
When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent. When Lisa and Kim finally landed, she breathed a sigh of relief. The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear. Vague pronoun references can be corrected in one of two ways: 1. Replace the pronoun with its correct antecedent: When Lisa and Kim finally landed, Lisa breathed a sigh of relief. 2. Rewrite the sentence: Lisa breathed a sigh of relief when she and Kim finally landed. A vague pronoun reference also occurs when they, them, their, theirs, it, or its is used without its antecedent. They say that this nail polish dries in less than five minutes. The pronoun they is used without its antecedent, so the meaning of the sentence is unclear. This problem can be fixed by replacing the pronoun with its missing antecedent. The advertisements say that this nail polish dries in less than five minutes.
The first answer choice contains a vague pronoun reference. The pronoun he could refer to David or Bob. The second answer choice shows a possible correction for the vague pronoun reference. He has been replaced with Bob. As David was walking with his friend Bob, Bob tripped on the uneven sidewalk.
Is coaching basketball a good or a service?
[ "a good", "a service" ]
1
closed choice
grade2
social science
economics
Economics
Goods and services
Everything you can buy is either a good or a service. A good is something you can touch or hold in your hands. For example, a hammer is a good. A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service.
To decide whether coaching basketball is a good or a service, ask these questions: Is coaching basketball something you can touch? No. Is coaching basketball a job you might pay someone else to do? Yes. So, coaching basketball is a service.
Which correctly shows the title of a newspaper?
[ "The Post and mail", "The Post and Mail" ]
1
closed choice
grade4
language science
capitalization
Formatting
Capitalizing titles
In a title, capitalize the first word, the last word, and every important word in between. The Wind in the Willows James and the Giant Peach These words are not important in titles: Articles, a, an, the Short prepositions, such as at, by, for, in, of, on, to, up Coordinating conjunctions, such as and, but, or
Capitalize the first word, the last word, and every important word in between. The word and is not important, so it should not be capitalized. The correct title is The Post and Mail.
Which is smoother?
[ "bark", "plastic ball" ]
1
closed choice
grade3
natural science
physics
Materials
Compare properties of materials
Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials. A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy. For example, a shiny material reflects a lot of light. A fragile material breaks when you drop it.
Smooth is a property. A smooth material is not rough or bumpy. Look at each picture, one at a time. Imagine touching the material shown in each picture. Of the choices, the plastic ball is smoother. If you touch a plastic bowling ball, it will not feel rough or bumpy.
How long is an ice skate?
[ "31 centimeters", "31 meters" ]
0
Select the better estimate.
closed choice
grade3
natural science
units-and-measurement
Units and measurement
Choose metric units of distance
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Imagine being told that a pencil is 16 long. You might be thinking, 16 what? Is the pencil 16 centimeters long? 16 meters? 16 kilometers? The number 16 on its own does not give you much information about the length of the pencil. That is because the units are missing. Now look at the drawing of the pencil and the ruler. The ruler shows that the units are centimeters. So, the length of the pencil is 16 centimeters. There are 100 centimeters in 1 meter. So, 1 centimeter is much shorter than 1 meter. There are 1,000 meters in 1 kilometer. So, 1 meter is much shorter than 1 kilometer.
The better estimate for the length of an ice skate is 31 centimeters. 31 meters is too long.
Which logical fallacy is used in the text? All of my friends are coming to my birthday party. If Tisha doesn't, she might as well tell me that she doesn't like me.
[ "red herring: the use of a completely unrelated topic or idea", "false dichotomy: an argument that presents only two choices when more options exist" ]
1
closed choice
grade6
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | a personal attack meant to discredit one's opponent appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something red herring | the use of a completely unrelated topic in support of a claim A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a very broad claim based on very little evidence straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that if Tisha doesn't go to the speaker's birthday party, it means that she hates the speaker. However, there may be a number of reasons why Tisha wouldn't go to the party. This illustrates a type of logical fallacy known as a false dichotomy.
Would you find the word tail on a dictionary page with the following guide words? terrify - transport
[ "no", "yes" ]
0
yes or no
grade3
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since tail is not between the guide words terrify - transport, it would not be found on that page.
Which logical fallacy is used in the text? Our family will never eat genetically modified food. It's an abomination created by arrogant human tinkering.
[ "false causation: the assumption that because two things happened together, one caused the other", "hasty generalization: a broad claim based on too few observations", "appeal to nature: the assumption that natural things are always good" ]
2
closed choice
grade12
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | an attack against the person making the argument, rather than the argument itself appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a broad claim based on too few observations slippery slope fallacy | the false assumption that a small first step will necessarily lead to extreme consequences straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that genetically modified food is bad because it's not natural. However, something isn't necessarily bad simply because it's engineered. This illustrates a type of logical fallacy known as an appeal to nature.
Is the following trait inherited or acquired? Clara can ride a bicycle.
[ "inherited", "acquired" ]
1
Hint: Riding a bike well takes practice.
closed choice
grade4
natural science
biology
Traits and heredity
Identify inherited and acquired traits
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.
People are not born knowing how to ride a bicycle. Instead, many people learn how to ride. So, riding a bicycle is an acquired trait.
What do these two changes have in common? water evaporating from a puddle burning a piece of wood
[ "Both are chemical changes.", "Both are only physical changes.", "Both are caused by heating.", "Both are caused by cooling." ]
2
closed choice
grade3
natural science
chemistry
Physical and chemical change
Compare physical and chemical changes
Chemical changes and physical changes are two common ways matter can change. In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. When paper gets hot enough, it re­acts with oxygen in the air and burns. The paper and oxygen change into ash and smoke. In a physical change, the type of matter stays the same. The types of matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, ice melting is a physical change that can be caused by heating. Ice and liquid water are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Water evaporating from a puddle is a change of state. So, it is a physical change. The liquid changes into a gas, but a different type of matter is not formed. Burning a piece of wood is a chemical change. When the wood burns, the type of matter in it changes. The wood turns black and gives off smoke. Step 2: Look at each answer choice. Both are only physical changes. Water evaporating is a physical change. But burning wood does not. Both are chemical changes. Burning a piece of wood is a chemical change. But water evaporating from a puddle is not. Both are caused by heating. Both changes are caused by heating. Both are caused by cooling. Neither change is caused by cooling.
Is the following trait inherited or acquired? Brandon has a scar on his left knee.
[ "inherited", "acquired" ]
1
closed choice
grade5
natural science
biology
Traits and heredity
Identify inherited and acquired traits
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.
Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait.
What is the volume of a large trash can?
[ "18 gallons", "18 fluid ounces", "18 cups" ]
0
Select the best estimate.
closed choice
grade4
natural science
units-and-measurement
Units and measurement
Choose customary units of volume
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Volume is a measurement of how much space something takes up. There are many different units of volume. When you are using customary units, volume may be written in units of fluid ounces, cups, or gallons. As the diagram shows, there are 8 fluid ounces in 1 cup and 16 cups in 1 gallon. So, 1 fluid ounce is less than 1 cup and much less than 1 gallon. A glass of milk has a volume of about 8 fluid ounces, or 1 cup. A jug of milk has a volume of 1 gallon.
The best estimate for the volume of a large trash can is 18 gallons. 18 fluid ounces and 18 cups are both too little.
What information supports the conclusion that Tara inherited this trait?
[ "Tara and her biological father wear sunglasses when they go outside.", "Tara's neighbor has green eyes.", "Tara has green eyes like her biological mother." ]
2
Read the description of a trait. Tara has green eyes.
closed choice
grade8
natural science
biology
Genes to traits
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits. Offspring receive their genes, and therefore gain their inherited traits, from their biological parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Parents do not pass acquired traits down to their offspring.
Which logical fallacy is used in the text? How could Vivian have anything insightful to say about foreign affairs? She grew up on a farm.
[ "slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences", "ad hominem: an attack against the person making the argument, rather than the argument itself", "bandwagon fallacy: the assumption that the popular choice is automatically correct" ]
1
closed choice
grade9
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | an attack against the person making the argument, rather than the argument itself appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a broad claim based on too few observations slippery slope fallacy | the false assumption that a small first step will necessarily lead to extreme consequences straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that Vivian cannot be insightful about foreign affairs because she grew up on a farm. This is a personal attack that isn't relevant to whether she knows about foreign affairs. This illustrates a type of logical fallacy known as ad hominem.
Does the sentence use a simile or a metaphor? Tessa went down the slide face-first, like a penguin.
[ "metaphor", "simile" ]
1
closed choice
grade4
language science
figurative-language
Literary devices
Identify similes and metaphors
Similes and metaphors are figures of speech that compare two things that are not actually alike. A simile compares two things by saying that one is like the other. Similes often use the words like and as. My sister runs like a cheetah. The sister's running and a cheetah's running are compared using the word like. A cheetah is known for running fast, so the simile means that the sister also runs fast. The cat's fur was as dark as the night. The cat's fur and the night are compared using the word as. The night is dark, so the simile means that the cat's fur is also dark. A metaphor compares two things by saying that one of them is the other. Unlike similes, metaphors don't use the word like or as. The snow formed a blanket over the town. The snow and a blanket are compared without the word like or as. A blanket is a large piece of cloth that completely covers a bed. The metaphor makes the reader imagine that the snow becomes a blanket, covering the town completely. Using similes and metaphors in your writing can help you create an interesting picture for the reader.
Tessa went down the slide face-first, like a penguin. The words Tessa and penguin are compared using the word like. So, the sentence uses a simile.
Select the one animal that has all of the amphibian traits listed above.
[ "Amazon milk frogs have moist skin and live in South American rain forests. They hatch from eggs with no shells and begin their lives in water. As adults, Amazon milk frogs live in trees and eat insects.", "Bengal tigers are one of the world's largest living cats. They have black, white, and orange fur. Female Bengal tigers feed their offspring milk. Male Bengal tigers can be almost twice as large as females!" ]
0
Amphibians are a group of animals with similar traits. The following traits can be used to identify amphibians: They spend part of their lives in water and part on land. They have moist skin. They make eggs with no shells. Observe the animals and read the descriptions.
closed choice
grade4
natural science
biology
Classification
Use evidence to classify mammals, birds, fish, reptiles, and amphibians
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live. How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.
To decide if an animal is part of a group, look at the traits of the group. Amphibians have the following traits: They spend part of their lives in water and part on land. They have moist skin. They make eggs with no shells. Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits. A Bengal tiger has the following traits: It feeds its offspring milk. It has hair. A Bengal tiger does not have all of the traits of an amphibian. A Bengal tiger is a mammal. An Amazon milk frog has the following traits: It spends part of its life in water and part on land. It has moist skin. It makes eggs with no shells. An Amazon milk frog has the traits of an amphibian. An Amazon milk frog is an amphibian.
What kind of sentence is this? May I have a second serving of dessert?
[ "exclamatory", "interrogative" ]
1
closed choice
grade4
language science
punctuation
Sentences, fragments, and run-ons
Is the sentence declarative, interrogative, imperative, or exclamatory?
There are four kinds of sentences. A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period. I have an older brother and a younger sister. An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark. How tall are you? An imperative sentence is a command. It makes a request or tells someone to do something. An imperative sentence usually ends with a period. If the command shows strong feeling, it ends with an exclamation point. Read the first chapter by next week. Look out for that car! An exclamatory sentence is like a statement, but it shows surprise or strong feeling. An exclamatory sentence always ends with an exclamation point. Some whales are over ninety feet long! I can't wait until tomorrow!
The sentence asks something, and it ends with a question mark. It is an interrogative sentence.
Which of the following contains a vague pronoun reference?
[ "John washed the windshield of his car even though he knew it would just get dirty again.", "John washed the windshield of his car even though he knew the car would just get dirty again." ]
0
closed choice
grade6
language science
pronouns
Pronouns and antecedents
Identify vague pronoun references
When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent. When Lisa and Kim finally landed, she breathed a sigh of relief. The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear. Vague pronoun references can be corrected in one of two ways: 1. Replace the pronoun with its correct antecedent: When Lisa and Kim finally landed, Lisa breathed a sigh of relief. 2. Rewrite the sentence: Lisa breathed a sigh of relief when she and Kim finally landed. A vague pronoun reference also occurs when they, them, their, theirs, it, or its is used without its antecedent. They say that this nail polish dries in less than five minutes. The pronoun they is used without its antecedent, so the meaning of the sentence is unclear. This problem can be fixed by replacing the pronoun with its missing antecedent. The advertisements say that this nail polish dries in less than five minutes.
The second answer choice contains a vague pronoun reference. The pronoun it could refer to the windshield or the car. The first answer choice shows a possible correction for the vague pronoun reference. It has been replaced with the car. John washed the windshield of his car even though he knew the car would just get dirty again.
Complete the sentence. In this chemical reaction, carbon dioxide is a ().
[ "reactant", "product" ]
1
This passage describes a chemical reaction. Read the passage. Then, follow the instructions below. Gasoline provides the energy that powers many car engines. In an engine, gasoline and oxygen are mixed together and burned, creating carbon dioxide gas and water vapor. This process releases energy that the engine uses to turn the wheels, making the car move.
closed choice
grade7
natural science
chemistry
Chemical reactions
Identify reactants and products
A chemical change occurs when new substances are formed from existing substances. This process is called a chemical reaction. In a chemical reaction, one or more substances change into one or more different substances. During the reaction, the atoms of the original substances are rearranged to form other substances. The original substances in a chemical reaction are called reactants. These substances react, or go through a chemical change. The substances that are formed in a chemical reaction are called products. These substances are produced by the chemical reaction. So, in a chemical reaction, reactants go through a chemical change to form products.
Read the underlined text carefully. Look for information about what happens to carbon dioxide in this chemical reaction. Gasoline provides the energy that powers many car engines. In an engine, gasoline and oxygen are mixed together and burned, creating carbon dioxide gas and water vapor. This process releases energy that the engine uses to turn the wheels, making the car move. The underlined text tells you that carbon dioxide forms when gasoline combines with oxygen. Because carbon dioxide is produced by this chemical reaction, carbon dioxide is a product.
Is the following statement true or false? The cytoplasm of an animal cell is made mostly of water.
[ "false", "true" ]
1
true-or false
grade4
natural science
biology
Cells
Cell part functions: true or false
The cytoplasm of an animal cell is made mostly of water. This statement is true. All cells have cytoplasm. The cytoplasm has many cell parts inside it, but it is made mostly of water.
Which logical fallacy is used in the text? Wendy never lies. She told me herself, so it must be true.
[ "false dichotomy: an argument that presents only two choices when more options exist", "circular reasoning: an argument that supports a claim with the claim itself" ]
1
closed choice
grade8
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | a personal attack meant to discredit one's opponent appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something red herring | the use of a completely unrelated topic in support of a claim A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a very broad claim based on very little evidence straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that Wendy is telling the truth because she says she never lies. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning.
Which greeting is correct for a letter?
[ "dear Ms. Chang,", "Dear Ms. Chang," ]
1
closed choice
grade4
language science
punctuation
Formatting
Greetings and closings of letters
A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue. Dear Aunt Sue, I'm glad you could come to my party, and thank you for the birthday gift. I could not have asked for a better one! Every time I see it, I think of you. With love, Rory
The second greeting is correct: Its first word is capitalized, and it ends with a comma. Ms. Chang is capitalized because it is a proper noun.
Which of the following contains a vague pronoun reference?
[ "Whenever the Duncans visit Florida, they see their relatives.", "The Duncans see their relatives whenever they visit Florida." ]
1
closed choice
grade7
language science
writing-strategies
Pronouns and antecedents
Identify vague pronoun references
When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent. When Lisa and Kim finally landed, she breathed a sigh of relief. The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear. Vague pronoun references can be corrected in one of two ways: 1. Replace the pronoun with its correct antecedent: When Lisa and Kim finally landed, Lisa breathed a sigh of relief. 2. Rewrite the sentence: Lisa breathed a sigh of relief when she and Kim finally landed. A vague pronoun reference also occurs when they, them, their, theirs, it, or its is used without its antecedent. They say that this nail polish dries in less than five minutes. The pronoun they is used without its antecedent, so the meaning of the sentence is unclear. This problem can be fixed by replacing the pronoun with its missing antecedent. The advertisements say that this nail polish dries in less than five minutes.
The first answer choice contains a vague pronoun reference. The pronoun they could refer to the Duncans or their relatives. The Duncans see their relatives whenever they visit Florida. The second answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning is clear. Whenever the Duncans visit Florida, they see their relatives.
Complete the sentence. The Eighth Amendment says that the government cannot use any punishments that are ().
[ "cruel and unusual", "embarrassing", "violent", "expensive" ]
0
closed choice
grade4
social science
civics
Government
The Bill of Rights
Today, the United States often uses punishments that are expensive, violent, or embarrassing. However, the Eighth Amendment says that the government cannot use any punishments that are "cruel and unusual." What makes a punishment "cruel or unusual"? The answer is not clear. The Eighth Amendment doesn't talk about specific punishments. Over time, Americans have changed their views on what is cruel and unusual. For example, the government decided in 2005 that it was cruel to put someone to death for a crime he or she committed before the age of 18. Today, Americans continue to question what is cruel and unusual. In the future, some punishments used today may be outlawed. The text of the Eighth Amendment is below. Does it have rules against anything else? Excessive bail shall not be required, nor excessive fines imposed, nor cruel and unusual punishments inflicted.
What does the verbal irony in this text suggest? While waiting for her search results, Shawna exclaimed, "My Internet connection is as speedy as a snail!"
[ "The Internet connection was very slow.", "The Internet connection was very fast." ]
0
closed choice
grade10
language science
figurative-language
Literary devices
Interpret figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking down. Each breakdown is as enjoyable as a punch to the face.
The text uses verbal irony, which involves saying one thing but implying something very different. As speedy as a snail suggests that the Internet connection was very slow. A snail is not speedy, and neither was Shawna's Internet connection.
Which figure of speech is used in this text? The people of San Francisco weren't exactly celebrating after the devastating 1906 earthquake.
[ "antithesis", "understatement" ]
1
closed choice
grade11
language science
figurative-language
Literary devices
Classify the figure of speech: review
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses. We are united. We are powerful. We are winners. Antithesis involves contrasting opposing ideas within a parallel grammatical structure. I want to help, not to hurt. Apostrophe is a direct address to an absent person or a nonhuman entity. Oh, little bird, what makes you sing so beautifully? Assonance is the repetition of a vowel sound in a series of nearby words. Try to light the fire. Chiasmus is an expression in which the second half parallels the first but reverses the order of words. Never let a fool kiss you or a kiss fool you. A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic. The head of Human Resources would never refer to firing people, only to laying them off. Hyperbole is an obvious exaggeration that is not meant to be taken literally. I ate so much that I think I might explode! An oxymoron is a joining of two seemingly contradictory terms. Some reviewers are calling this book a new classic. A paradox is a statement that might at first appear to be contradictory, but that may in fact contain some truth. Always expect the unexpected. Understatement involves deliberately representing something as less serious or important than it really is. As you know, it can get a little cold in the Antarctic.
The text uses understatement, which involves deliberately representing something as less serious or important than it really is. Weren't exactly celebrating is an understatement, since people wouldn't celebrate at all after a devastating earthquake.
Which sentence is more formal?
[ "Merritt Electronics has a reputation for responding real quick to customer concerns and questions.", "Merritt Electronics has a reputation for responding quickly to all customer concerns and questions." ]
1
closed choice
grade5
language science
writing-strategies
Author's purpose and tone
Which sentence is more formal?
Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing: Type | Examples slang | cool, awesome idioms | knock your socks off conversational language | gonna, kinda, yeah abbreviated language | ASAP, FYI overly simple or imprecise language | he got some stuff at the store contractions | can't, won't Contractions are not as informal as the other types, but they should be used sparingly in formal writing. Compare the following sentences. The first is informal. The second is formal. Informal: Yeah, ostriches can't fly, but they're awesome runners. Formal: Though ostriches are flightless, they are remarkably adept runners.
The second sentence is less formal. You can tell because it uses conversational language (real quick). The first sentence uses formal language in place of the conversational language, so it is more formal overall.
Which figure of speech is used in this text? We are not destined to be adversaries, but it is not guaranteed that we will be allies. —President Bill Clinton, speech to the Russian parliament
[ "antithesis", "apostrophe" ]
0
closed choice
grade11
language science
figurative-language
Literary devices
Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses. We are united. We are powerful. We are winners. Antithesis involves contrasting opposing ideas within a parallel grammatical structure. I want to help, not to hurt. Apostrophe is a direct address to an absent person or a nonhuman entity. Oh, little bird, what makes you sing so beautifully? Assonance is the repetition of a vowel sound in a series of nearby words. Try to light the fire. Chiasmus is an expression in which the second half parallels the first but reverses the order of words. Never let a fool kiss you or a kiss fool you. Understatement involves deliberately representing something as less serious or important than it really is. As you know, it can get a little cold in the Antarctic.
The text uses antithesis, the contrasting of opposing ideas within a parallel grammatical structure. Clinton contrasts two clauses, we are not destined to be adversaries and it is not guaranteed that we will be allies.
Which is a compound sentence?
[ "Mr. Duran peeled the tangerine and divided it into sections.", "Pam and her brother rummaged through the boxes in the attic, but they couldn't find their father's childhood baseball glove." ]
1
closed choice
grade6
language science
grammar
Sentences, fragments, and run-ons
Is the sentence simple, compound, or complex?
A clause is a group of words that contains both a subject and a predicate. An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence. the oranges on our tree are ripe The clause can stand alone. It is independent. after we pick up Kevin from work The clause cannot stand alone. It is dependent. A simple sentence is made up of a single independent clause. Ben and I spent all day relaxing by the pool. Some simple sentences have introductory phrases, but the introductory phrase is part of the predicate. In the winter, Ben usually wears his heavy coat. Ben usually wears his heavy coat in the winter. A compound sentence is made up of two independent clauses joined by a coordinating conjunction such as and, but, or, or so. We saw a flash of lightning, and seconds later we heard the rumble of thunder. A complex sentence is made up of an independent clause and a dependent clause. The dependent clause usually begins with a subordinating conjunction such as after, although, as, because, before, if, since, unless, until, when, or while. If she ever gets the chance, Terri would love to visit the Egyptian pyramids.
The second sentence is the compound sentence. It is made up of two independent clauses joined by the coordinating conjunction but. Pam and her brother rummaged through the boxes in the attic, but they couldn't find their father's childhood baseball glove.
Which is a complex sentence?
[ "Akira and her sisters drew a map of the United States and hung it on the wall.", "Joe walked through Paris in a daze because he was still suffering from jet lag." ]
1
closed choice
grade6
language science
grammar
Sentences, fragments, and run-ons
Is the sentence simple, compound, or complex?
A clause is a group of words that contains both a subject and a predicate. An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence. the oranges on our tree are ripe The clause can stand alone. It is independent. after we pick up Kevin from work The clause cannot stand alone. It is dependent. A simple sentence is made up of a single independent clause. Ben and I spent all day relaxing by the pool. Some simple sentences have introductory phrases, but the introductory phrase is part of the predicate. In the winter, Ben usually wears his heavy coat. Ben usually wears his heavy coat in the winter. A compound sentence is made up of two independent clauses joined by a coordinating conjunction such as and, but, or, or so. We saw a flash of lightning, and seconds later we heard the rumble of thunder. A complex sentence is made up of an independent clause and a dependent clause. The dependent clause usually begins with a subordinating conjunction such as after, although, as, because, before, if, since, unless, until, when, or while. If she ever gets the chance, Terri would love to visit the Egyptian pyramids.
The first sentence is the complex sentence. It is made up of an independent clause and a dependent clause. The dependent clause begins with the subordinating conjunction because. Joe walked through Paris in a daze because he was still suffering from jet lag.
Complete the sentence. Silver jewelry tarnishing is a ().
[ "physical change", "chemical change" ]
1
closed choice
grade4
natural science
chemistry
Physical and chemical change
Identify physical and chemical changes
Chemical changes and physical changes are two common ways matter can change. In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different. Burning a piece of paper is a chemical change. When paper gets hot enough, it reacts with oxygen in the air and burns. The paper and oxygen change into ash and smoke. In a physical change, the type of matter stays the same. The types of matter before and after a physical change are always the same. Cutting a piece of paper is a physical change. The cut pieces are still made of paper. A change of state is a type of physical change. For example, ice melting is a physical change. Ice and liquid water are made of the same type of matter: water.
Metal turning less shiny over time is called tarnishing. Silver jewelry tarnishing is a chemical change. The silver reacts with sulfur in the air to form black tarnish. The tarnish is a different type of matter that was not there before the change.
What do these two changes have in common? pouring milk on oatmeal sanding a piece of wood
[ "Both are only physical changes.", "Both are caused by heating.", "Both are caused by cooling.", "Both are chemical changes." ]
0
closed choice
grade8
natural science
chemistry
Chemical reactions
Compare physical and chemical changes
Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule. In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. As paper burns, paper molecules react with oxygen molecules in the air. This reaction breaks the chemical bonds in the molecules. The atoms then link together in a different way to form different molecules. For example, carbon dioxide molecules are formed when paper burns. In a physical change, chemical bonds do not break. The types of molecules in matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, water vaporizing is a physical change that can be caused by heating. Liquid water and water vapor are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Pouring milk on oatmeal is a physical change. The oatmeal and milk form a creamy mixture. But making this mixture does not form a different type of matter. Sanding a piece of wood is a physical change. The wood becomes smoother, but it is still made of the same type of matter. Step 2: Look at each answer choice. Both are only physical changes. Both changes are physical changes. No new matter is created. Both are chemical changes. Both changes are physical changes. They are not chemical changes. Both are caused by heating. Neither change is caused by heating. Both are caused by cooling. Neither change is caused by cooling.
Select the elementary substance.
[ "phosphine (PH3)", "zirconium (Zr)", "potassium nitrate (KNO3)" ]
1
closed choice
grade5
natural science
chemistry
Atoms and molecules
Identify elementary substances and compounds using chemical formulas
Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds. Every chemical element is represented by its own symbol. For some elements, the symbol is one capital letter. For other elements, the symbol is one capital letter and one lowercase letter. For example, the symbol for the element fluorine is F, and the symbol for the element beryllium is Be. The symbol for each element in a substance is shown in the substance's chemical formula. An elementary substance is represented by a chemical formula that contains only one symbol. The symbol may be followed by a subscript. A subscript is text that is smaller and placed lower than the normal line of text. A subscript is included when the atoms in the elementary substance are bonded to form molecules. The subscript tells you the number of atoms in each molecule. For example, the chemical formula for the elementary substance oxygen is O2. The formula has a subscript of 2. This subscript tells you that there are two atoms in the molecule represented by this chemical formula. The chemical element represented by the symbol O is also called oxygen. So, the formula O2 tells you that each molecule of O2 contains two oxygen atoms. A compound is represented by a chemical formula that contains multiple symbols. For example, in the compound beryllium fluoride, there is one beryllium atom for every two fluorine atoms. This combination is shown in the compound's chemical formula, BeF2. In the formula, the symbol Be represents one beryllium atom. The symbol F followed by the subscript 2 represents two fluorine atoms.
Look at the chemical formula for each substance, and count the number of symbols in the formula. Then, decide if the substance is an elementary substance. The chemical formula for phosphine contains two symbols: P for phosphorus and H for hydrogen. So, phosphine is made of two chemical elements bonded together. Substances that are made of two or more chemical elements bonded together are compounds. So, phosphine is a compound, not an elementary substance. The chemical formula for zirconium contains one symbol: Zr. So, zirconium is made of one chemical element. Substances that are made of one chemical element are elementary substances. So, zirconium is an elementary substance. The chemical formula for potassium nitrate contains three symbols: K for potassium, N for nitrogen, and O for oxygen. So, potassium nitrate is made of three chemical elements bonded together. Substances that are made of two or more chemical elements bonded together are compounds. So, potassium nitrate is a compound, not an elementary substance.
Select the solid.
[ "chair", "water in a bathtub", "milk" ]
0
closed choice
grade2
natural science
physics
States of matter
Identify solids and liquids
Solid and liquid are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms. When matter is a solid, it has a shape of its own. Some solids can be bent or broken easily. Others are hard to bend or break. A glass cup is a solid. A sock is also a solid. When matter is a liquid, it takes the shape of its container. Think about pouring a liquid from a cup into a bottle. The shape of the liquid is different in the cup than in the bottle. But the liquid still takes up the same amount of space. Juice is a liquid. Honey is also a liquid.
Complete the statement. Calcium oxide is ().
[ "a compound", "an elementary substance" ]
0
Calcium oxide is used to make cement and steel. The chemical formula for calcium oxide is CaO.
closed choice
grade8
natural science
chemistry
Atoms and molecules
Classify elementary substances and compounds using chemical formulas
There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you. A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are composed of multiple chemical elements bonded together are compounds. Every chemical element is represented by its own atomic symbol. An atomic symbol may consist of one capital letter, or it may consist of a capital letter followed by a lowercase letter. For example, the atomic symbol for the chemical element fluorine is F, and the atomic symbol for the chemical element beryllium is Be. The atomic symbol for each chemical element in a substance is shown in the substance's chemical formula. An elementary substance is represented by a chemical formula that contains only one atomic symbol. The atomic symbol in a chemical formula may be followed by a small number written lower than the symbol. This number is called a subscript. A subscript is included when the atoms in the elementary substance are bonded to form molecules. The subscript shows how many atoms are in each molecule. For example, the chemical formula for the elementary substance oxygen, O2, has a subscript of 2. This subscript shows that the atomic symbol O represents two atoms. The elementary substance O2 and the chemical element represented by the atomic symbol O are both named oxygen. So, the formula tells you that each molecule of O2 contains two oxygen atoms. A compound is represented by a chemical formula that contains multiple atomic symbols. The chemical elements in a compound are bonded together in a fixed ratio. This ratio is shown in a compound's chemical formula. For example, in the compound beryllium fluoride, there is one beryllium atom for every two fluorine atoms. So, the ratio of beryllium atoms to fluorine atoms is 1 to 2. This ratio is shown in the chemical formula for beryllium fluoride, BeF2. There is no subscript following the atomic symbol Be because that symbol represents one atom. The subscript 2 follows the atomic symbol F to show that the symbol represents two atoms.
You can tell whether calcium oxide is an elementary substance or a compound by counting the number of atomic symbols in its chemical formula. An atomic symbol consists of either one capital letter or a capital letter followed by one or two lowercase letters. The chemical formula for calcium oxide, CaO, contains two atomic symbols: Ca for calcium and O for oxygen. So, the formula tells you that calcium oxide is composed of two chemical elements bonded together. Since calcium oxide is composed of multiple chemical elements bonded together, calcium oxide is a compound.
Which figure of speech is used in this text? The old wooden rocking chair that Judy brought home from the rummage sale was as comfortable as a bed of nails.
[ "verbal irony", "pun" ]
0
closed choice
grade6
language science
figurative-language
Literary devices
Classify figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Alliteration is the repetition of sounds at the beginning of nearby words. What a lucky little lady you are! An allusion is a brief reference to something or someone well known, often from history or literature. "I'd better get home before I turn into a pumpkin!" Lila remarked. An idiom is an expression that cannot be understood literally. Its meaning must be learned. The assignment was a piece of cake. A simile uses like or as to compare two things that are not actually alike. The cat's fur was as dark as the night. A metaphor compares two things that are not actually alike without using like or as. The snow formed a blanket over the town. Onomatopoeia involves using a word that expresses a sound. The scrambled eggs hit the floor with a splat. Personification is giving human characteristics to nonhuman things. The trees danced in the wind. A pun involves using a word or phrase in a humorous way that suggests more than one meaning. A great new broom is sweeping the nation. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking down. Each breakdown is as enjoyable as a punch to the face.
The text uses verbal irony, which involves saying one thing but implying something very different. As comfortable as a bed of nails shows verbal irony because sitting on nails would not be comfortable.
What do these two changes have in common? dry ice sublimating and becoming a gas grilling a hamburger
[ "Both are chemical changes.", "Both are caused by heating.", "Both are only physical changes.", "Both are caused by cooling." ]
1
closed choice
grade7
natural science
chemistry
Chemical reactions
Compare physical and chemical changes
Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule. In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. As paper burns, paper molecules react with oxygen molecules in the air. This reaction breaks the chemical bonds in the molecules. The atoms then link together in a different way to form different molecules. For example, carbon dioxide molecules are formed when paper burns. In a physical change, chemical bonds do not break. The types of molecules in matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, water vaporizing is a physical change that can be caused by heating. Liquid water and water vapor are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Dry ice is solid carbon dioxide. When dry ice gets warm, it changes state and becomes carbon dioxide gas. This change of state, from solid to gas, is called sublimation. Dry ice becoming a gas is a physical change. A change of state does not form a different type of matter. Grilling a hamburger is a chemical change. Heat from the grill causes the matter in the meat to change. Cooked meat and raw meat are different types of matter. Step 2: Look at each answer choice. Both are only physical changes. Dry ice sublimating is a physical change. But grilling a hamburger is not. Both are chemical changes. Grilling a hamburger is a chemical change. But dry ice sublimating is not. Both are caused by heating. Both changes are caused by heating. Both are caused by cooling. Neither change is caused by cooling.
Complete the sentence. A piece of avocado turning brown is a ().
[ "physical change", "chemical change" ]
1
closed choice
grade4
natural science
chemistry
Physical and chemical change
Identify physical and chemical changes
Chemical changes and physical changes are two common ways matter can change. In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different. Burning a piece of paper is a chemical change. When paper gets hot enough, it reacts with oxygen in the air and burns. The paper and oxygen change into ash and smoke. In a physical change, the type of matter stays the same. The types of matter before and after a physical change are always the same. Cutting a piece of paper is a physical change. The cut pieces are still made of paper. A change of state is a type of physical change. For example, ice melting is a physical change. Ice and liquid water are made of the same type of matter: water.
A piece of avocado turning brown is a chemical change. The avocado reacts with oxygen in the air to form a different type of matter. If you scrape off the brown part of the avocado, the inside will still be green. The inside hasn't touched the air. So the chemical change hasn't happened to that part of the avocado.
What is the source of the allusion in the sentence below? Camille told her friends that Zeke was a typical Peter Pan type.
[ "a song", "literature" ]
1
closed choice
grade7
language science
figurative-language
Literary devices
Recall the source of an allusion
An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words. "I'd better get home before I turn into a pumpkin!" Lila remarked. Here, Lila alludes to the fairy tale "Cinderella," in which Cinderella must leave the ball before the coach that brought her transforms into a pumpkin. The allusion shows that Lila must depart immediately.
The source of the allusion Peter Pan is literature. In a J. M. Barrie novel, the character Peter Pan retreats to Neverland and refuses to grow up. The allusion Peter Pan means a person who won't take on adult responsibilities.
How long is an ice skate?
[ "33 meters", "33 centimeters" ]
1
Select the better estimate.
closed choice
grade3
natural science
units-and-measurement
Units and measurement
Choose metric units of distance
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Imagine being told that a pencil is 16 long. You might be thinking, 16 what? Is the pencil 16 centimeters long? 16 meters? 16 kilometers? The number 16 on its own does not give you much information about the length of the pencil. That is because the units are missing. Now look at the drawing of the pencil and the ruler. The ruler shows that the units are centimeters. So, the length of the pencil is 16 centimeters. There are 100 centimeters in 1 meter. So, 1 centimeter is much shorter than 1 meter. There are 1,000 meters in 1 kilometer. So, 1 meter is much shorter than 1 kilometer.
The better estimate for the length of an ice skate is 33 centimeters. 33 meters is too long.
Which letter closing is more formal?
[ "Sincerely,", "Bye," ]
0
closed choice
grade11
language science
writing-strategies
Audience, purpose, and tone
Which text is most formal?
Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions. Formal writing is typically used in academic and business writing or when writing directly to an authority figure. It tends to be more courteous and impersonal, avoiding overly familiar or conversational language. Compare the following sentences. Informal: Yeah, ostriches can't fly, but I think they're awesome. More formal: Ostriches may be flightless, but they're remarkable runners. Most formal: Though flightless, ostriches are remarkable runners.
The second letter closing is more formal. The other letter closing is more casual and suggests a familiarity with the person being written to.
Does this passage describe the weather or the climate? Dale lives on a mountain where the winds are strong most evenings.
[ "climate", "weather" ]
0
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place.
closed choice
grade4
natural science
earth-science
Weather and climate
What's the difference between weather and climate?
The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere. Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day. Climate is the pattern of weather in a certain place. For example, summer temperatures in New York are usually higher than winter temperatures.
Read the text carefully. Dale lives on a mountain where the winds are strong most evenings. This passage tells you about the usual wind patterns where Dale lives. It does not describe what the weather is like on a particular day. So, this passage describes the climate.
Which is softer?
[ "nylon track suit", "diamond" ]
0
closed choice
grade2
natural science
physics
Materials
Compare properties of materials
Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials. A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells.
Soft is a property. A soft material changes shape when you press on it. Look at each picture, one at a time. Imagine touching the material shown in each picture. Of the choices, the nylon track suit is softer. If you squeeze nylon, it will change shape.
What information supports the conclusion that Mona acquired this trait?
[ "Mona learned to identify insects by reading many books about insects.", "Mona likes to look at butterflies and beetles." ]
0
Read the description of a trait. Mona is good at identifying insects.
closed choice
grade4
natural science
biology
Traits and heredity
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.
Which is bumpier?
[ "rock wall", "rubber ball" ]
0
closed choice
grade2
natural science
physics
Materials
Compare properties of materials
Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials. A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells.
Bumpy is a property. A bumpy material is covered in lumps and bumps. It is not flat or smooth. Look at each picture, one at a time. Imagine touching the material shown in each picture. Of the choices, the rock wall is bumpier. If you touch a rock wall, it will feel bumpy and lumpy.
Would you find the word coyote on a dictionary page with the following guide words? clutch - crude
[ "no", "yes" ]
1
yes or no
grade3
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since coyote is between the guide words clutch - crude, it would be found on that page.
What do these two changes have in common? sauce burning on a stove cooking a pancake
[ "Both are only physical changes.", "Both are caused by cooling.", "Both are chemical changes." ]
2
closed choice
grade7
natural science
chemistry
Chemical reactions
Compare physical and chemical changes
Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule. In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. As paper burns, paper molecules react with oxygen molecules in the air. This reaction breaks the chemical bonds in the molecules. The atoms then link together in a different way to form different molecules. For example, carbon dioxide molecules are formed when paper burns. In a physical change, chemical bonds do not break. The types of molecules in matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, water vaporizing is a physical change that can be caused by heating. Liquid water and water vapor are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Sauce burning on a stove is a chemical change. High temperatures case the sauce to react with oxygen in the air. The sauce turns black and no longer tastes good. Cooking a pancake is a chemical change. Pancakes are made from pancake batter. A cooked pancake is a different type of matter than pancake batter. Pancake batter is wet and slippery. Cooked pancakes are fluffy and can be good to eat! Step 2: Look at each answer choice. Both are only physical changes. Both changes are chemical changes. They are not physical changes. Both are chemical changes. Both changes are chemical changes. The type of matter before and after each change is different. Both are caused by heating. Both changes are caused by heating. Both are caused by cooling. Neither change is caused by cooling.
Which is a compound sentence?
[ "Our cat has been scratching himself more than usual, so I checked him for fleas.", "The famous Venus de Milo statue was found on Milos, a volcanic Greek island in the Aegean Sea." ]
0
closed choice
grade6
language science
grammar
Sentences, fragments, and run-ons
Is the sentence simple, compound, or complex?
A clause is a group of words that contains both a subject and a predicate. An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence. the oranges on our tree are ripe The clause can stand alone. It is independent. after we pick up Kevin from work The clause cannot stand alone. It is dependent. A simple sentence is made up of a single independent clause. Ben and I spent all day relaxing by the pool. Some simple sentences have introductory phrases, but the introductory phrase is part of the predicate. In the winter, Ben usually wears his heavy coat. Ben usually wears his heavy coat in the winter. A compound sentence is made up of two independent clauses joined by a coordinating conjunction such as and, but, or, or so. We saw a flash of lightning, and seconds later we heard the rumble of thunder. A complex sentence is made up of an independent clause and a dependent clause. The dependent clause usually begins with a subordinating conjunction such as after, although, as, because, before, if, since, unless, until, when, or while. If she ever gets the chance, Terri would love to visit the Egyptian pyramids.
The first sentence is the compound sentence. It is made up of two independent clauses joined by the coordinating conjunction so. Our cat has been scratching himself more than usual, so I checked him for fleas.
Which text uses the word peruse in its traditional sense?
[ "Deion perused the nails in the hardware aisle for almost an hour, trying to figure out which type would be best for his project.", "Before returning to the stockroom, Deion briefly perused the nails in the hardware aisle to see if anything needed to be restocked." ]
0
closed choice
grade12
language science
writing-strategies
Word usage and nuance
Explore words with new or contested usages
Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner. When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be more commonly used, many people consider a word's traditional definition to be the correct usage. Being able to distinguish the different uses of a word can help you use it appropriately for different audiences. Britney perused her notes, carefully preparing for her exam. The traditional usage above is considered more standard. David perused the magazine, absentmindedly flipping through the pages. The nontraditional usage above is now commonly used, but traditional style guides generally advise against it.
The second text uses peruse in its traditional sense: to examine in detail. Deion perused the nails in the hardware aisle for almost an hour, trying to figure out which type would be best for his project. The first text uses peruse in its nontraditional sense: to look through in a casual manner. Before returning to the stockroom, Deion briefly perused the nails in the hardware aisle to see if anything needed to be restocked. Most style guides recommend to use the traditional sense of the word peruse because it is considered more standard.
What information supports the conclusion that Trent inherited this trait?
[ "Trent's mother cuts his hair every month.", "Trent's parents have blond hair. They passed down this trait to Trent." ]
1
Read the description of a trait. Trent has blond hair.
closed choice
grade6
natural science
biology
Genes to traits
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits. Offspring receive their genes, and therefore gain their inherited traits, from their biological parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Parents do not pass acquired traits down to their offspring.
Using only these supplies, which question can Vicky investigate with an experiment?
[ "When placed in the sun, will eight ounces of water in a glass jar or eight ounces of water in a plastic cup get warmer?", "When placed in the sun, will eight ounces of water in a closed jar or eight ounces of water in an open jar get warmer?", "Will eight ounces of carbonated water or eight ounces of tap water get warmer when placed in a jar in the sun?" ]
1
Vicky leaves a glass jar of cold tea outside in full sunlight. When she goes to get it, she notices that the tea is warm. She wonders what factors affect how warm a liquid gets from sitting in the sunlight. So, she decides to design an experiment. She has the following supplies available: two identical glass jars two jar lids tap water a measuring cup two thermometers
closed choice
grade7
natural science
science-and-engineering-practices
Designing experiments
Identify questions that can be investigated with a set of materials
Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment. Imagine that you are wondering if plants grow to different heights when planted in different types of soil. How might you decide what supplies are necessary to conduct this experiment? First, you need to identify the part of the experiment that will be tested, which is the independent variable. This is usually the part of the experiment that is different or changed. In this case, you would like to know how plants grow in different types of soil. So, you must have different types of soil available. Next, you need to identify the part of the experiment that will be measured or observed, which is the dependent variable. In this experiment, you would like to know if some plants grow taller than others. So, you must be able to compare the plants' heights. To do this, you can observe which plants are taller by looking at them, or you can measure their exact heights with a meterstick. So, if you have different types of soil and can observe or measure the heights of your plants, then you have the supplies you need to investigate your question with an experiment!
Does this passage describe the weather or the climate? Helena, Montana, got two inches of rain last night.
[ "climate", "weather" ]
1
closed choice
grade5
natural science
earth-science
Weather and climate
What's the difference between weather and climate?
The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere. Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day. Climate is the pattern of weather in a certain place. For example, summer temperatures in New York are usually higher than winter temperatures.
Read the text carefully. Helena, Montana, got two inches of rain last night. This passage tells you about the precipitation in Helena last night. It describes the atmosphere at a certain place and time. So, this passage describes the weather.
Which word would you find on a dictionary page with the following guide words? badger - bright
[ "burglar", "bead" ]
1
closed choice
grade8
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since bead is between the guide words badger - bright, it would be found on that page.
Which word would you find on a dictionary page with the following guide words? act - ate
[ "ability", "aquarium" ]
1
closed choice
grade4
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since aquarium is between the guide words act - ate, it would be found on that page.
Which word would you find on a dictionary page with the following guide words? civilian - coin
[ "claw", "carried" ]
0
closed choice
grade3
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since claw is between the guide words civilian - coin, it would be found on that page.
Which logical fallacy is used in the text? Since Westford College receives more applications for admission than Newton University, Westford College is evidently a better school.
[ "false dichotomy: an argument that presents only two choices when more options exist", "bandwagon fallacy: the assumption that the popular choice is automatically correct", "false causation: the assumption that because two things happened together, one caused the other" ]
1
closed choice
grade9
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | an attack against the person making the argument, rather than the argument itself appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a broad claim based on too few observations slippery slope fallacy | the false assumption that a small first step will necessarily lead to extreme consequences straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that Westford College is better than Newton University because Westford College receives more applications. However, the popularity of a school does not necessarily indicate its quality. This illustrates a type of logical fallacy known as the bandwagon fallacy.
Which figure of speech is used in this text? The city of Oak Grove is currently experiencing a minor crisis. Its sanitation workers are on strike, and the garbage is piling up in the streets.
[ "paradox", "oxymoron" ]
1
closed choice
grade12
language science
figurative-language
Literary devices
Classify the figure of speech: euphemism, hyperbole, oxymoron, paradox
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic. The head of Human Resources would never refer to firing people, only to laying them off. Hyperbole is an obvious exaggeration that is not meant to be taken literally. I ate so much that I think I might explode! An oxymoron is a joining of two seemingly contradictory terms. Some reviewers are calling this book a new classic. A paradox is a statement that might at first appear to be contradictory, but that may in fact contain some truth. Always expect the unexpected.
The text uses an oxymoron, a joining of two seemingly contradictory terms. Minor crisis is a contradiction, because minor means small or insignificant, and a crisis is a large problem.
What do these two changes have in common? sewing an apron snowflakes forming in a cloud
[ "Both are only physical changes.", "Both are chemical changes.", "Both are caused by cooling.", "Both are caused by heating." ]
0
closed choice
grade7
natural science
chemistry
Chemical reactions
Compare physical and chemical changes
Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule. In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. As paper burns, paper molecules react with oxygen molecules in the air. This reaction breaks the chemical bonds in the molecules. The atoms then link together in a different way to form different molecules. For example, carbon dioxide molecules are formed when paper burns. In a physical change, chemical bonds do not break. The types of molecules in matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, water vaporizing is a physical change that can be caused by heating. Liquid water and water vapor are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Sewing an apron is a physical change. The fabric and thread that make up the apron get a new shape, but the type of matter in each of them does not change. Snowflakes forming in a cloud is a change of state. So, it is a physical change. Liquid water freezes and becomes solid, but it is still made of water. A different type of matter is not formed. Step 2: Look at each answer choice. Both are only physical changes. Both changes are physical changes. No new matter is created. Both are chemical changes. Both changes are physical changes. They are not chemical changes. Both are caused by heating. Neither change is caused by heating. Both are caused by cooling. A snowflake begins to form when a tiny drop of liquid water in a cloud freezes. This is caused by cooling. But sewing an apron is not.
What kind of sentence is this? Jayden usually eats oatmeal for breakfast.
[ "exclamatory", "declarative" ]
1
closed choice
grade5
language science
punctuation
Sentences, fragments, and run-ons
Is the sentence declarative, interrogative, imperative, or exclamatory?
There are four kinds of sentences. A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period. I have an older brother and a younger sister. An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark. How tall are you? An imperative sentence is a command. It makes a request or tells someone to do something. An imperative sentence usually ends with a period. If the command shows strong feeling, it ends with an exclamation point. Read the first chapter by next week. Look out for that car! An exclamatory sentence is like a statement, but it shows surprise or strong feeling. An exclamatory sentence always ends with an exclamation point. Some whales are over ninety feet long! I can't wait until tomorrow!
The sentence tells about something, and it ends with a period. It is a declarative sentence.
What is the volume of a coffee pot?
[ "10 cups", "10 gallons", "10 fluid ounces" ]
0
Select the best estimate.
closed choice
grade5
natural science
units-and-measurement
Units and measurement
Choose customary units of volume
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Volume is a measurement of how much space something takes up. There are many different units of volume. When you are using customary units, volume may be written in units of fluid ounces, cups, or gallons. As the diagram shows, there are 8 fluid ounces in 1 cup and 16 cups in 1 gallon. So, 1 fluid ounce is less than 1 cup and much less than 1 gallon. A glass of milk has a volume of about 8 fluid ounces, or 1 cup. A jug of milk has a volume of 1 gallon.
The best estimate for the volume of a coffee pot is 10 cups. 10 fluid ounces is too little and 10 gallons is too much.
Select the animal.
[ "Raspberry bushes have green leaves.", "Howler monkeys eat leaves, fruit, and nuts." ]
1
closed choice
grade2
natural science
biology
Classification
Identify plants and animals
Plants and animals are living things. Living things are called organisms. Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can. Animals also come in many shapes and sizes. Most animals can move around. Animals might run, swim, jump, or fly. Animals eat plants or other organisms for food.
A howler monkey is an animal. It eats leaves, fruit, and nuts. A howler monkey's tail can be longer than the rest of its body! A raspberry bush is a plant. It has green leaves. Most raspberries are red. But raspberries can also be purple or yellow.