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CSZ_2006_5_CSZ10266

A metal spoon was left in a pot of boiling soup. The cook burned a finger by touching the spoon. Why did the finger get burned?

C

Question: A metal spoon was left in a pot of boiling soup. The cook burned a finger by touching the spoon. Why did the finger get burned? (A) The metal spoon chemically reacted with the cook's hand. (B) The metal spoon conducted electricity to the cook's hand. (C) The metal spoon conducted heat to the cook's hand. (D) The metal spoon insulated the cook's hand.

Answer: (C) The metal spoon conducted heat to the cook's hand.

Answer: (D) The metal spoon insulated the cook's hand.

Question: A metal spoon was left in a pot of boiling soup. The cook burned a finger by touching the spoon. Why did the finger get burned? (A) The metal spoon chemically reacted with the cook's hand. (B) The metal spoon conducted electricity to the cook's hand. (C) The metal spoon conducted heat to the cook's hand. (D) The metal spoon insulated the cook's hand. Answer: (C) The metal spoon conducted heat to the cook's hand.

Mercury_7213518

Light rays are focused by the lens of a camera through the process of

B

Question: Light rays are focused by the lens of a camera through the process of (A) reflection. (B) refraction. (C) dispersion. (D) diffraction.

Answer: (B) refraction.

Answer: (D) diffraction.

Question: Light rays are focused by the lens of a camera through the process of (A) reflection. (B) refraction. (C) dispersion. (D) diffraction. Answer: (B) refraction.

Mercury_184083

Which of these provides the best evidence that the distribution of Earth's oceans has changed over time?

D

Question: Which of these provides the best evidence that the distribution of Earth's oceans has changed over time? (A) hot spots on ocean floors (B) seismic activity along plate boundaries (C) sediment buildup on continental slope (D) marine fossils found on land masses

Answer: (D) marine fossils found on land masses

Answer: (C) sediment buildup on continental slope

Question: Which of these provides the best evidence that the distribution of Earth's oceans has changed over time? (A) hot spots on ocean floors (B) seismic activity along plate boundaries (C) sediment buildup on continental slope (D) marine fossils found on land masses Answer: (D) marine fossils found on land masses

Mercury_7024343

Which change would have the greatest negative impact on the survival of an owl species?

C

Question: Which change would have the greatest negative impact on the survival of an owl species? (A) an increase in primary consumer population (B) an decrease in acid rain (C) an decrease in size of habitat (D) an increase in producers

Answer: (C) an decrease in size of habitat

Answer: (D) an increase in producers

Question: Which change would have the greatest negative impact on the survival of an owl species? (A) an increase in primary consumer population (B) an decrease in acid rain (C) an decrease in size of habitat (D) an increase in producers Answer: (C) an decrease in size of habitat

CSZ10086

Which organ removes cell waste from the blood?

C

Question: Which organ removes cell waste from the blood? (A) the large intestine (B) the small intestine (C) the kidney (D) the heart

Answer: (C) the kidney

Answer: (D) the heart

Question: Which organ removes cell waste from the blood? (A) the large intestine (B) the small intestine (C) the kidney (D) the heart Answer: (C) the kidney

Mercury_7011340

According to the Big Bang Theory, how is the universe changing?

B

Question: According to the Big Bang Theory, how is the universe changing? (A) It is contracting. (B) It is expanding. (C) Only the rim is expanding. (D) Only the center is contracting.

Answer: (B) It is expanding.

Answer: (C) Only the rim is expanding.

Question: According to the Big Bang Theory, how is the universe changing? (A) It is contracting. (B) It is expanding. (C) Only the rim is expanding. (D) Only the center is contracting. Answer: (B) It is expanding.

Mercury_SC_400116

Light enters the human eye through the

B

Question: Light enters the human eye through the (A) retina. (B) pupil. (C) iris. (D) lens.

Answer: (B) pupil.

Answer: (C) iris.

Question: Light enters the human eye through the (A) retina. (B) pupil. (C) iris. (D) lens. Answer: (B) pupil.

MCAS_2016_5_12

The stages in the life cycle of an organism are shown below. birth -> growth -> development -> reproduction -> death In which life cycle stage will a new organism be made?

C

Question: The stages in the life cycle of an organism are shown below. birth -> growth -> development -> reproduction -> death In which life cycle stage will a new organism be made? (A) growth (B) development (C) reproduction (D) death

Answer: (C) reproduction

Answer: (A) growth

Question: The stages in the life cycle of an organism are shown below. birth -> growth -> development -> reproduction -> death In which life cycle stage will a new organism be made? (A) growth (B) development (C) reproduction (D) death Answer: (C) reproduction

MCAS_2008_5_5617

Baby chicks peck their way out of their shells when they hatch. This activity is an example of which of the following types of behavior?

A

Question: Baby chicks peck their way out of their shells when they hatch. This activity is an example of which of the following types of behavior? (A) instinctive (B) learned (C) planned (D) social

Answer: (A) instinctive

Answer: (B) learned

Question: Baby chicks peck their way out of their shells when they hatch. This activity is an example of which of the following types of behavior? (A) instinctive (B) learned (C) planned (D) social Answer: (A) instinctive

Mercury_7114888

Which conclusion can be made about earthworms because they do not have an internal skeleton?

A

Question: Which conclusion can be made about earthworms because they do not have an internal skeleton? (A) They are invertebrates. (B) They have radial symmetry. (C) They are made of one segment. (D) They have an open circulatory system.

Answer: (A) They are invertebrates.

Answer: (C) They are made of one segment.

Question: Which conclusion can be made about earthworms because they do not have an internal skeleton? (A) They are invertebrates. (B) They have radial symmetry. (C) They are made of one segment. (D) They have an open circulatory system. Answer: (A) They are invertebrates.

Mercury_7083353

The smallest unit of a plant that can perform all of the processes of life is the

B

Question: The smallest unit of a plant that can perform all of the processes of life is the (A) leaf. (B) cell. (C) tissue. (D) root.

Answer: (B) cell.

Answer: (C) tissue.

Question: The smallest unit of a plant that can perform all of the processes of life is the (A) leaf. (B) cell. (C) tissue. (D) root. Answer: (B) cell.

Mercury_SC_408685

Soda water is a liquid that has bubbles of carbon dioxide in it. Which term best describes soda water?

A

Question: Soda water is a liquid that has bubbles of carbon dioxide in it. Which term best describes soda water? (A) a mixture (B) a molecule (C) an element (D) a compound

Answer: (A) a mixture

Answer: (D) a compound

Question: Soda water is a liquid that has bubbles of carbon dioxide in it. Which term best describes soda water? (A) a mixture (B) a molecule (C) an element (D) a compound Answer: (A) a mixture

Mercury_7109550

All stars start forming in the same manner. Some follow the life cycle of the Sun, while others turn into neutron stars or black holes. Which property determines the fate of a star as it develops?

A

Question: All stars start forming in the same manner. Some follow the life cycle of the Sun, while others turn into neutron stars or black holes. Which property determines the fate of a star as it develops? (A) mass (B) location (C) luminosity (D) temperature

Answer: (A) mass

Answer: (B) location

Question: All stars start forming in the same manner. Some follow the life cycle of the Sun, while others turn into neutron stars or black holes. Which property determines the fate of a star as it develops? (A) mass (B) location (C) luminosity (D) temperature Answer: (A) mass

TIMSS_1995_8_O15

If a neutral atom loses an electron, what is formed?

B

Question: If a neutral atom loses an electron, what is formed? (A) A gas (B) An ion (C) An acid (D) A molecule

Answer: (B) An ion

Answer: (D) A molecule

Question: If a neutral atom loses an electron, what is formed? (A) A gas (B) An ion (C) An acid (D) A molecule Answer: (B) An ion

Mercury_7033495

A student mixed baking soda with vinegar and observed that the reaction was endothermic. When is a reaction endothermic?

C

Question: A student mixed baking soda with vinegar and observed that the reaction was endothermic. When is a reaction endothermic? (A) when it is reversible (B) when it can be repeated (C) when it requires heat to make it happen (D) when energy is released by the process

Answer: (C) when it requires heat to make it happen

Answer: (D) when energy is released by the process

Question: A student mixed baking soda with vinegar and observed that the reaction was endothermic. When is a reaction endothermic? (A) when it is reversible (B) when it can be repeated (C) when it requires heat to make it happen (D) when energy is released by the process Answer: (C) when it requires heat to make it happen

MCAS_2008_8_5720

What is the primary energy source that drives all weather events, including precipitation, hurricanes, and tornados?

A

Question: What is the primary energy source that drives all weather events, including precipitation, hurricanes, and tornados? (A) the Sun (B) the Moon (C) Earth's gravity (D) Earth's rotation

Answer: (A) the Sun

Answer: (D) Earth's rotation

Question: What is the primary energy source that drives all weather events, including precipitation, hurricanes, and tornados? (A) the Sun (B) the Moon (C) Earth's gravity (D) Earth's rotation Answer: (A) the Sun

Mercury_SC_406036

Which system absorbs and carries food from the digestive system to the rest of the body?

C

Question: Which system absorbs and carries food from the digestive system to the rest of the body? (A) nervous system (B) muscular system (C) circulatory system (D) respiratory system

Answer: (C) circulatory system

Answer: (B) muscular system

Question: Which system absorbs and carries food from the digestive system to the rest of the body? (A) nervous system (B) muscular system (C) circulatory system (D) respiratory system Answer: (C) circulatory system

Mercury_400613

Why do planets stay in orbit around the Sun?

A

Question: Why do planets stay in orbit around the Sun? (A) attraction of gravity (B) effect of inertia (C) frictional force (D) rotational force

Answer: (A) attraction of gravity

Answer: (D) rotational force

Question: Why do planets stay in orbit around the Sun? (A) attraction of gravity (B) effect of inertia (C) frictional force (D) rotational force Answer: (A) attraction of gravity

MEA_2014_8_9

Earth rotates on its north-south axis. Which statement best describes one complete rotation?

B

Question: Earth rotates on its north-south axis. Which statement best describes one complete rotation? (A) It takes six months and causes summer and winter seasons. (B) It takes 24 hours and causes night and day. (C) It takes 29 days, which represents one cycle of the Moon's phases. (D) It takes 365 days, which represents one Earth year.

Answer: (B) It takes 24 hours and causes night and day.

Answer: (D) It takes 365 days, which represents one Earth year.

Question: Earth rotates on its north-south axis. Which statement best describes one complete rotation? (A) It takes six months and causes summer and winter seasons. (B) It takes 24 hours and causes night and day. (C) It takes 29 days, which represents one cycle of the Moon's phases. (D) It takes 365 days, which represents one Earth year. Answer: (B) It takes 24 hours and causes night and day.

LEAP_2003_4_10252

A rock sample will most likely contain

B

Question: A rock sample will most likely contain (A) plants. (B) minerals. (C) water. (D) wood.

Answer: (B) minerals.

Answer: (C) water.

Question: A rock sample will most likely contain (A) plants. (B) minerals. (C) water. (D) wood. Answer: (B) minerals.

Mercury_7007385

A jet plane is moving at a constant velocity on a flat surface. Which forces act against the forward motion of the plane?

C

Question: A jet plane is moving at a constant velocity on a flat surface. Which forces act against the forward motion of the plane? (A) gravity and engine thrust (B) engine thrust and friction (C) friction and air resistance (D) air resistance and gravity

Answer: (C) friction and air resistance

Answer: (D) air resistance and gravity

Question: A jet plane is moving at a constant velocity on a flat surface. Which forces act against the forward motion of the plane? (A) gravity and engine thrust (B) engine thrust and friction (C) friction and air resistance (D) air resistance and gravity Answer: (C) friction and air resistance

Mercury_7217945

Atmospheric greenhouse gases help heat the atmosphere by

C

Question: Atmospheric greenhouse gases help heat the atmosphere by (A) increasing the amount of solar radiation reaching Earth. (B) storing energy produced by human activity. (C) absorbing infrared radiation released by Earth. (D) increasing the average density of air.

Answer: (C) absorbing infrared radiation released by Earth.

Answer: (A) increasing the amount of solar radiation reaching Earth.

Question: Atmospheric greenhouse gases help heat the atmosphere by (A) increasing the amount of solar radiation reaching Earth. (B) storing energy produced by human activity. (C) absorbing infrared radiation released by Earth. (D) increasing the average density of air. Answer: (C) absorbing infrared radiation released by Earth.

NYSEDREGENTS_2009_8_35

Scurvy is a disease that sailors often got on long voyages. It was discovered that scurvy could be prevented by eating oranges and lemons. This suggests that scurvy is a disease caused by

2

Question: Scurvy is a disease that sailors often got on long voyages. It was discovered that scurvy could be prevented by eating oranges and lemons. This suggests that scurvy is a disease caused by (1) exposure to sea air (2) a nutritional deficiency (3) a microorganism (4) lack of exercise

Answer: (2) a nutritional deficiency

Answer: (4) lack of exercise

Question: Scurvy is a disease that sailors often got on long voyages. It was discovered that scurvy could be prevented by eating oranges and lemons. This suggests that scurvy is a disease caused by (1) exposure to sea air (2) a nutritional deficiency (3) a microorganism (4) lack of exercise Answer: (2) a nutritional deficiency

LEAP__5_10313

Runoff from farms that use fertilizers is entering a small lake. This will most directly affect the lake by causing

B

Question: Runoff from farms that use fertilizers is entering a small lake. This will most directly affect the lake by causing (A) the lake to dry up. (B) algae to grow in the lake. (C) the lake to become deeper. (D) water in the lake to become solid.

Answer: (B) algae to grow in the lake.

Answer: (D) water in the lake to become solid.

Question: Runoff from farms that use fertilizers is entering a small lake. This will most directly affect the lake by causing (A) the lake to dry up. (B) algae to grow in the lake. (C) the lake to become deeper. (D) water in the lake to become solid. Answer: (B) algae to grow in the lake.

NCEOGA_2013_8_60

Why is protein an important part of a healthy diet?

C

Question: Why is protein an important part of a healthy diet? (A) It is needed to change glucose to energy. (B) It is needed to store nutrients. (C) It is needed to repair tissue. (D) It is needed to produce water.

Answer: (C) It is needed to repair tissue.

Answer: (B) It is needed to store nutrients.

Question: Why is protein an important part of a healthy diet? (A) It is needed to change glucose to energy. (B) It is needed to store nutrients. (C) It is needed to repair tissue. (D) It is needed to produce water. Answer: (C) It is needed to repair tissue.

Mercury_7009485

An atom will always have

B

Question: An atom will always have (A) a single, negatively-charged nucleus. (B) equal numbers of protons and electrons. (C) "shared" electrons from another atom. (D) a stable number of charged neutrons.

Answer: (B) equal numbers of protons and electrons.

Answer: (C) "shared" electrons from another atom.

Question: An atom will always have (A) a single, negatively-charged nucleus. (B) equal numbers of protons and electrons. (C) "shared" electrons from another atom. (D) a stable number of charged neutrons. Answer: (B) equal numbers of protons and electrons.

Mercury_408134

Students on two different school campuses are comparing the growth rate of grass three weeks after fertilizer has been applied. The same fertilizer and the same amount of water are used on both campuses. Which additional variable is most important to control when the results of the two investigations are compared?

A

Question: Students on two different school campuses are comparing the growth rate of grass three weeks after fertilizer has been applied. The same fertilizer and the same amount of water are used on both campuses. Which additional variable is most important to control when the results of the two investigations are compared? (A) type of grass used (B) amount of trees in the area (C) the weather conditions of the day (D) the time of day the measurements are taken

Answer: (A) type of grass used

Answer: (D) the time of day the measurements are taken

Question: Students on two different school campuses are comparing the growth rate of grass three weeks after fertilizer has been applied. The same fertilizer and the same amount of water are used on both campuses. Which additional variable is most important to control when the results of the two investigations are compared? (A) type of grass used (B) amount of trees in the area (C) the weather conditions of the day (D) the time of day the measurements are taken Answer: (A) type of grass used

MCAS_2003_5_5

A caterpillar changing into a butterfly is an example of

D

Question: A caterpillar changing into a butterfly is an example of (A) instinct. (B) duplication. (C) reproduction. (D) metamorphosis.

Answer: (D) metamorphosis.

Answer: (C) reproduction.

Question: A caterpillar changing into a butterfly is an example of (A) instinct. (B) duplication. (C) reproduction. (D) metamorphosis. Answer: (D) metamorphosis.

Mercury_7248518

Some immune cells are actively involved in ingesting, destroying, and presenting invading microbial antigens on their surface to stimulate other cells to produce antibodies. Which of these cells is responsible for initiating such an immune response?

B

Question: Some immune cells are actively involved in ingesting, destroying, and presenting invading microbial antigens on their surface to stimulate other cells to produce antibodies. Which of these cells is responsible for initiating such an immune response? (A) mast cells (B) phagocytes (C) B-lymphocytes (D) T-lymphocytes

Answer: (B) phagocytes

Answer: (C) B-lymphocytes

Question: Some immune cells are actively involved in ingesting, destroying, and presenting invading microbial antigens on their surface to stimulate other cells to produce antibodies. Which of these cells is responsible for initiating such an immune response? (A) mast cells (B) phagocytes (C) B-lymphocytes (D) T-lymphocytes Answer: (B) phagocytes

MCAS_2006_9_18

A single prokaryotic cell can divide several times in an hour. Few eukaryotic cells can divide as quickly. Which of the following statements best explains this difference?

D

Question: A single prokaryotic cell can divide several times in an hour. Few eukaryotic cells can divide as quickly. Which of the following statements best explains this difference? (A) Eukaryotic cells are smaller than prokaryotic cells. (B) Eukaryotic cells have less DNA than prokaryotic cells. (C) Eukaryotic cells have more cell walls than prokaryotic cells. (D) Eukaryotic cells are more structurally complex than prokaryotic cells.

Answer: (D) Eukaryotic cells are more structurally complex than prokaryotic cells.

Answer: (A) Eukaryotic cells are smaller than prokaryotic cells.

Question: A single prokaryotic cell can divide several times in an hour. Few eukaryotic cells can divide as quickly. Which of the following statements best explains this difference? (A) Eukaryotic cells are smaller than prokaryotic cells. (B) Eukaryotic cells have less DNA than prokaryotic cells. (C) Eukaryotic cells have more cell walls than prokaryotic cells. (D) Eukaryotic cells are more structurally complex than prokaryotic cells. Answer: (D) Eukaryotic cells are more structurally complex than prokaryotic cells.

Mercury_7248168

Which biological process determines the probability that particular alleles will be found in any given gamete?

B

Question: Which biological process determines the probability that particular alleles will be found in any given gamete? (A) mutation (B) meiosis (C) cell cycle (D) protein synthesis

Answer: (B) meiosis

Answer: (C) cell cycle

Question: Which biological process determines the probability that particular alleles will be found in any given gamete? (A) mutation (B) meiosis (C) cell cycle (D) protein synthesis Answer: (B) meiosis

NYSEDREGENTS_2005_4_24

When a person speaks into a telephone, sound energy is changed mostly into which form of energy?

C

Question: When a person speaks into a telephone, sound energy is changed mostly into which form of energy? (A) heat (B) light (C) electrical (D) chemical

Answer: (C) electrical

Answer: (D) chemical

Question: When a person speaks into a telephone, sound energy is changed mostly into which form of energy? (A) heat (B) light (C) electrical (D) chemical Answer: (C) electrical

Mercury_7029488

In the human body, what part of the central nervous system connects with other nerves outside of the central nervous system?

D

Question: In the human body, what part of the central nervous system connects with other nerves outside of the central nervous system? (A) dendrite (B) cerebrum (C) cerebellum (D) spinal cord

Answer: (D) spinal cord

Answer: (C) cerebellum

Question: In the human body, what part of the central nervous system connects with other nerves outside of the central nervous system? (A) dendrite (B) cerebrum (C) cerebellum (D) spinal cord Answer: (D) spinal cord

Mercury_7283640

Photovoltaic cells capture photons of sunlight and transform them directly into electricity. Many of Earth's other energy resources are simply transformed solar energy. Which two energy resources store energy that did not begin as solar energy?

C

Question: Photovoltaic cells capture photons of sunlight and transform them directly into electricity. Many of Earth's other energy resources are simply transformed solar energy. Which two energy resources store energy that did not begin as solar energy? (A) oil and coal (B) wind and wood (C) nuclear and geothermal (D) hydropower and natural gas

Answer: (C) nuclear and geothermal

Answer: (A) oil and coal

Question: Photovoltaic cells capture photons of sunlight and transform them directly into electricity. Many of Earth's other energy resources are simply transformed solar energy. Which two energy resources store energy that did not begin as solar energy? (A) oil and coal (B) wind and wood (C) nuclear and geothermal (D) hydropower and natural gas Answer: (C) nuclear and geothermal

Mercury_7210823

What determines how long the Moon takes to complete one cycle of phases?

B

Question: What determines how long the Moon takes to complete one cycle of phases? (A) the period of rotation of the Moon around its axis (B) the period of revolution of the Moon around Earth (C) the period of rotation of Earth around its axis (D) the period of revolution of Earth around the Sun

Answer: (B) the period of revolution of the Moon around Earth

Answer: (D) the period of revolution of Earth around the Sun

Question: What determines how long the Moon takes to complete one cycle of phases? (A) the period of rotation of the Moon around its axis (B) the period of revolution of the Moon around Earth (C) the period of rotation of Earth around its axis (D) the period of revolution of Earth around the Sun Answer: (B) the period of revolution of the Moon around Earth

Mercury_7014123

Oxygen reacts with iron to produce rust and with hydrogen to produce water. Which statement describes both reactions?

D

Question: Oxygen reacts with iron to produce rust and with hydrogen to produce water. Which statement describes both reactions? (A) A different mixture is formed in each case. (B) A different solution is formed in each case. (C) Both a change of state and of elements is involved. (D) New molecules are formed but the same elements exist.

Answer: (D) New molecules are formed but the same elements exist.

Answer: (B) A different solution is formed in each case.

Question: Oxygen reacts with iron to produce rust and with hydrogen to produce water. Which statement describes both reactions? (A) A different mixture is formed in each case. (B) A different solution is formed in each case. (C) Both a change of state and of elements is involved. (D) New molecules are formed but the same elements exist. Answer: (D) New molecules are formed but the same elements exist.

Mercury_183680

What is the primary job of red blood cells?

A

Question: What is the primary job of red blood cells? (A) transport oxygen (B) remove waste (C) fight disease (D) allow reproduction

Answer: (A) transport oxygen

Answer: (C) fight disease

Question: What is the primary job of red blood cells? (A) transport oxygen (B) remove waste (C) fight disease (D) allow reproduction Answer: (A) transport oxygen

MCAS_2003_8_20

What kingdom contains organisms that are multicellular, have no chlorophyll, and absorb nutrients from decaying tissue?

A

Question: What kingdom contains organisms that are multicellular, have no chlorophyll, and absorb nutrients from decaying tissue? (A) Fungi (B) Plantae (C) Protista (D) Animalia

Answer: (A) Fungi

Answer: (D) Animalia

Question: What kingdom contains organisms that are multicellular, have no chlorophyll, and absorb nutrients from decaying tissue? (A) Fungi (B) Plantae (C) Protista (D) Animalia Answer: (A) Fungi

Mercury_7223738

A salvage yard contains a mixture of iron, glass, aluminum, and plastic. Which property of iron does the salvage yard take advantage of when separating the iron from the rest of the materials?

A

Question: A salvage yard contains a mixture of iron, glass, aluminum, and plastic. Which property of iron does the salvage yard take advantage of when separating the iron from the rest of the materials? (A) magnetic (B) electrical (C) ductility (D) malleability

Answer: (A) magnetic

Answer: (B) electrical

Question: A salvage yard contains a mixture of iron, glass, aluminum, and plastic. Which property of iron does the salvage yard take advantage of when separating the iron from the rest of the materials? (A) magnetic (B) electrical (C) ductility (D) malleability Answer: (A) magnetic

VASoL_2008_3_24

While a sailor was out fishing, he got lost at sea. Which object would help him direct the boat back to shore?

B

Question: While a sailor was out fishing, he got lost at sea. Which object would help him direct the boat back to shore? (A) Rope (B) Magnetic compass (C) Blanket (D) Measuring tape

Answer: (B) Magnetic compass

Answer: (A) Rope

Question: While a sailor was out fishing, he got lost at sea. Which object would help him direct the boat back to shore? (A) Rope (B) Magnetic compass (C) Blanket (D) Measuring tape Answer: (B) Magnetic compass

Mercury_7205958

Water is a very important part of the physical weathering of rock. Which of these properties of water is most important in causing some of the physical weathering of rock?

C

Question: Water is a very important part of the physical weathering of rock. Which of these properties of water is most important in causing some of the physical weathering of rock? (A) Water is a liquid at room temperature. (B) Water can contain different minerals. (C) Water expands when it freezes. (D) Water dissolves many chemicals.

Answer: (C) Water expands when it freezes.

Answer: (B) Water can contain different minerals.

Question: Water is a very important part of the physical weathering of rock. Which of these properties of water is most important in causing some of the physical weathering of rock? (A) Water is a liquid at room temperature. (B) Water can contain different minerals. (C) Water expands when it freezes. (D) Water dissolves many chemicals. Answer: (C) Water expands when it freezes.

Mercury_7013440

A student uses a telescope to view stars at night. The student notices some of the stars are different colors. The color of a star is determined most by its

D

Question: A student uses a telescope to view stars at night. The student notices some of the stars are different colors. The color of a star is determined most by its (A) size. (B) distance from Earth. (C) mass. (D) temperature.

Answer: (D) temperature.

Answer: (A) size.

Question: A student uses a telescope to view stars at night. The student notices some of the stars are different colors. The color of a star is determined most by its (A) size. (B) distance from Earth. (C) mass. (D) temperature. Answer: (D) temperature.

Mercury_7227745

Which function is performed at similarly structured sites in prokaryotic and eukaryotic cells?

A

Question: Which function is performed at similarly structured sites in prokaryotic and eukaryotic cells? (A) protein synthesis (B) packaging and transport of proteins (C) storage of genetic material (D) release of energy from storage forms

Answer: (A) protein synthesis

Answer: (B) packaging and transport of proteins

Question: Which function is performed at similarly structured sites in prokaryotic and eukaryotic cells? (A) protein synthesis (B) packaging and transport of proteins (C) storage of genetic material (D) release of energy from storage forms Answer: (A) protein synthesis

Mercury_SC_413304

Which material is the best natural resource to use for making water-resistant shoes?

B

Question: Which material is the best natural resource to use for making water-resistant shoes? (A) cotton (B) leather (C) plastic (D) wool

Answer: (B) leather

Answer: (C) plastic

Question: Which material is the best natural resource to use for making water-resistant shoes? (A) cotton (B) leather (C) plastic (D) wool Answer: (B) leather

Mercury_7042613

When hunting by humans causes a species to become extinct, this may produce damaging effects throughout the ecosystem of the extinct species. What is the cause of this damage?

A

Question: When hunting by humans causes a species to become extinct, this may produce damaging effects throughout the ecosystem of the extinct species. What is the cause of this damage? (A) alteration of a food web (B) degradation of a habitat (C) modification of a climate (D) reversal of a flow of energy

Answer: (A) alteration of a food web

Answer: (B) degradation of a habitat

Question: When hunting by humans causes a species to become extinct, this may produce damaging effects throughout the ecosystem of the extinct species. What is the cause of this damage? (A) alteration of a food web (B) degradation of a habitat (C) modification of a climate (D) reversal of a flow of energy Answer: (A) alteration of a food web

Mercury_SC_408557

Sarah's class is learning about mixtures and solutions. Her teacher writes four statements on the board. Which statement best describes a mixture?

D

Question: Sarah's class is learning about mixtures and solutions. Her teacher writes four statements on the board. Which statement best describes a mixture? (A) Both substances mix evenly. (B) Both substances can evaporate. (C) One substance dissolves into another. (D) One substance can be separated from the other.

Answer: (D) One substance can be separated from the other.

Answer: (C) One substance dissolves into another.

Question: Sarah's class is learning about mixtures and solutions. Her teacher writes four statements on the board. Which statement best describes a mixture? (A) Both substances mix evenly. (B) Both substances can evaporate. (C) One substance dissolves into another. (D) One substance can be separated from the other. Answer: (D) One substance can be separated from the other.

NAEP_2005_4_S13+13

Which of the following best explains why the Sun appears to move across the sky every day?

B

Question: Which of the following best explains why the Sun appears to move across the sky every day? (A) The Sun rotates on its axis. (B) Earth rotates on its axis. (C) The Sun orbits around Earth. (D) Earth orbits around the Sun.

Answer: (B) Earth rotates on its axis.

Answer: (A) The Sun rotates on its axis.

Question: Which of the following best explains why the Sun appears to move across the sky every day? (A) The Sun rotates on its axis. (B) Earth rotates on its axis. (C) The Sun orbits around Earth. (D) Earth orbits around the Sun. Answer: (B) Earth rotates on its axis.

Mercury_7009695

The theory of spontaneous generation was eventually disproved scientifically by

D

Question: The theory of spontaneous generation was eventually disproved scientifically by (A) arguments in philosophy. (B) chemical analysis of material. (C) examining models of the process. (D) conducting a controlled experiment.

Answer: (D) conducting a controlled experiment.

Answer: (C) examining models of the process.

Question: The theory of spontaneous generation was eventually disproved scientifically by (A) arguments in philosophy. (B) chemical analysis of material. (C) examining models of the process. (D) conducting a controlled experiment. Answer: (D) conducting a controlled experiment.

Mercury_7220308

Discarded electronic devices, such as outdated computers and cell phones, contain materials that can be toxic to the environment. Which statement best explains why humans continue to use these technologies?

D

Question: Discarded electronic devices, such as outdated computers and cell phones, contain materials that can be toxic to the environment. Which statement best explains why humans continue to use these technologies? (A) Electronics have become less expensive over time. (B) Some areas have recycling programs for electronics. (C) Industries that produce electronics help the economy. (D) Humans value the benefits of these devices over their cost.

Answer: (D) Humans value the benefits of these devices over their cost.

Answer: (A) Electronics have become less expensive over time.

Question: Discarded electronic devices, such as outdated computers and cell phones, contain materials that can be toxic to the environment. Which statement best explains why humans continue to use these technologies? (A) Electronics have become less expensive over time. (B) Some areas have recycling programs for electronics. (C) Industries that produce electronics help the economy. (D) Humans value the benefits of these devices over their cost. Answer: (D) Humans value the benefits of these devices over their cost.

NYSEDREGENTS_2011_4_11

A student crumples up a sheet of paper. Which property of the paper has changed?

D

Question: A student crumples up a sheet of paper. Which property of the paper has changed? (A) color (B) mass (C) state (D) shape

Answer: (D) shape

Answer: (A) color

Question: A student crumples up a sheet of paper. Which property of the paper has changed? (A) color (B) mass (C) state (D) shape Answer: (D) shape

Mercury_SC_400403

When a plant dies, it often decomposes and becomes part of the soil. This process is one step in which cycle?

C

Question: When a plant dies, it often decomposes and becomes part of the soil. This process is one step in which cycle? (A) lunar (B) water (C) carbon (D) energy

Answer: (C) carbon

Answer: (D) energy

Question: When a plant dies, it often decomposes and becomes part of the soil. This process is one step in which cycle? (A) lunar (B) water (C) carbon (D) energy Answer: (C) carbon

ACTAAP_2008_5_3

Which would best aid a scientist in discovering how Earth may have changed over time?

D

Question: Which would best aid a scientist in discovering how Earth may have changed over time? (A) finding the nest of a bald eagle (B) tracking the footprints of a wolf (C) analyzing the pollination of a sunflower (D) discovering a fossil of a seashell in a wooded area

Answer: (D) discovering a fossil of a seashell in a wooded area

Answer: (A) finding the nest of a bald eagle

Question: Which would best aid a scientist in discovering how Earth may have changed over time? (A) finding the nest of a bald eagle (B) tracking the footprints of a wolf (C) analyzing the pollination of a sunflower (D) discovering a fossil of a seashell in a wooded area Answer: (D) discovering a fossil of a seashell in a wooded area

Mercury_SC_409150

Kendall studied the ways in which human body systems work together. He compared the respiratory and circulatory systems. In which way are these two systems similar to each other?

A

Question: Kendall studied the ways in which human body systems work together. He compared the respiratory and circulatory systems. In which way are these two systems similar to each other? (A) They both bring oxygen to the body. (B) They both send messages to the body. (C) They both digest nutrients for the body. (D) They both pump blood through the body.

Answer: (A) They both bring oxygen to the body.

Answer: (D) They both pump blood through the body.

Question: Kendall studied the ways in which human body systems work together. He compared the respiratory and circulatory systems. In which way are these two systems similar to each other? (A) They both bring oxygen to the body. (B) They both send messages to the body. (C) They both digest nutrients for the body. (D) They both pump blood through the body. Answer: (A) They both bring oxygen to the body.

Mercury_7071715

A difference between the oceanic crust and the continental crust is that the oceanic crust is

B

Question: A difference between the oceanic crust and the continental crust is that the oceanic crust is (A) composed chiefly of sedimentary rocks. (B) more dense than the continental crust. (C) older than the continental crust. (D) continually being created.

Answer: (B) more dense than the continental crust.

Answer: (C) older than the continental crust.

Question: A difference between the oceanic crust and the continental crust is that the oceanic crust is (A) composed chiefly of sedimentary rocks. (B) more dense than the continental crust. (C) older than the continental crust. (D) continually being created. Answer: (B) more dense than the continental crust.

Mercury_7245805

Which of these elements is found in the greatest amount in organisms?

A

Question: Which of these elements is found in the greatest amount in organisms? (A) carbon (B) iron (C) lead (D) neon

Answer: (A) carbon

Answer: (B) iron

Question: Which of these elements is found in the greatest amount in organisms? (A) carbon (B) iron (C) lead (D) neon Answer: (A) carbon

Mercury_7170345

After mining removes layers of rock from a hillside, new plants begin to grow in the cracks of the bare rock. The plants beginning to grow are an example of which natural process?

D

Question: After mining removes layers of rock from a hillside, new plants begin to grow in the cracks of the bare rock. The plants beginning to grow are an example of which natural process? (A) secondary succession in an existing ecosystem (B) new species developing in an ecosystem (C) species competition in a community (D) primary succession in a new habitat

Answer: (D) primary succession in a new habitat

Answer: (A) secondary succession in an existing ecosystem

Question: After mining removes layers of rock from a hillside, new plants begin to grow in the cracks of the bare rock. The plants beginning to grow are an example of which natural process? (A) secondary succession in an existing ecosystem (B) new species developing in an ecosystem (C) species competition in a community (D) primary succession in a new habitat Answer: (D) primary succession in a new habitat

Mercury_7093170

Improvements in farming technology would most likely

A

Question: Improvements in farming technology would most likely (A) increase the amount of food produced. (B) change global climate conditions. (C) promote unhealthy dietary choices. (D) decrease the amount of daily exercise.

Answer: (A) increase the amount of food produced.

Answer: (B) change global climate conditions.

Question: Improvements in farming technology would most likely (A) increase the amount of food produced. (B) change global climate conditions. (C) promote unhealthy dietary choices. (D) decrease the amount of daily exercise. Answer: (A) increase the amount of food produced.

MEAP_2005_5_39

In a container, a mixture of water and salt is stirred so that the salt dissolves completely. Sand is added to this solution and allowed to settle to the bottom of the container. If the container is placed on a heat source and the liquid evaporates completely, what will be left in the container?

D

Question: In a container, a mixture of water and salt is stirred so that the salt dissolves completely. Sand is added to this solution and allowed to settle to the bottom of the container. If the container is placed on a heat source and the liquid evaporates completely, what will be left in the container? (A) Nothing will remain in the container. (B) Only salt will remain in the container. (C) Only sand will remain in the container. (D) Salt and sand will both remain in the container.

Answer: (D) Salt and sand will both remain in the container.

Answer: (C) Only sand will remain in the container.

Question: In a container, a mixture of water and salt is stirred so that the salt dissolves completely. Sand is added to this solution and allowed to settle to the bottom of the container. If the container is placed on a heat source and the liquid evaporates completely, what will be left in the container? (A) Nothing will remain in the container. (B) Only salt will remain in the container. (C) Only sand will remain in the container. (D) Salt and sand will both remain in the container. Answer: (D) Salt and sand will both remain in the container.

TIMSS_2007_8_pg32

Which of the following is formed immediately after fertilization?

C

Question: Which of the following is formed immediately after fertilization? (A) egg (B) sperm (C) zygote (D) embryo

Answer: (C) zygote

Answer: (D) embryo

Question: Which of the following is formed immediately after fertilization? (A) egg (B) sperm (C) zygote (D) embryo Answer: (C) zygote

Mercury_181510

Which of the following helped lead to the invention of personal computers?

D

Question: Which of the following helped lead to the invention of personal computers? (A) Internet (B) keyboard (C) wireless transmitter (D) integrated circuit

Answer: (D) integrated circuit

Answer: (A) Internet

Question: Which of the following helped lead to the invention of personal computers? (A) Internet (B) keyboard (C) wireless transmitter (D) integrated circuit Answer: (D) integrated circuit

Mercury_SC_403015

Blood absorbs oxygen in the

B

Question: Blood absorbs oxygen in the (A) heart. (B) lungs. (C) stomach. (D) muscles.

Answer: (B) lungs.

Answer: (A) heart.

Question: Blood absorbs oxygen in the (A) heart. (B) lungs. (C) stomach. (D) muscles. Answer: (B) lungs.

Mercury_SC_401159

A student adds sugar, spices, and salt to a bowl of peanuts and stirs them together. What has the student made?

C

Question: A student adds sugar, spices, and salt to a bowl of peanuts and stirs them together. What has the student made? (A) a compound (B) a substance (C) a mixture (D) a solution

Answer: (C) a mixture

Answer: (B) a substance

Question: A student adds sugar, spices, and salt to a bowl of peanuts and stirs them together. What has the student made? (A) a compound (B) a substance (C) a mixture (D) a solution Answer: (C) a mixture

Mercury_7200043

Over time, non-volcanic mountains can form due to the interaction of plate boundaries. Which interaction is most likely associated with the formation of non-volcanic mountains?

C

Question: Over time, non-volcanic mountains can form due to the interaction of plate boundaries. Which interaction is most likely associated with the formation of non-volcanic mountains? (A) oceanic plates colliding with oceanic plates (B) oceanic plates separating from oceanic plates (C) continental plates colliding with continental plates (D) continental plates separating from continental plates

Answer: (C) continental plates colliding with continental plates

Answer: (D) continental plates separating from continental plates

Question: Over time, non-volcanic mountains can form due to the interaction of plate boundaries. Which interaction is most likely associated with the formation of non-volcanic mountains? (A) oceanic plates colliding with oceanic plates (B) oceanic plates separating from oceanic plates (C) continental plates colliding with continental plates (D) continental plates separating from continental plates Answer: (C) continental plates colliding with continental plates

Mercury_7122868

Most stars in the Milky Way are like the Sun. The Sun will eventually become a red giant. After the red giant stage, what determines whether a star will become a white dwarf or a supernova?

A

Question: Most stars in the Milky Way are like the Sun. The Sun will eventually become a red giant. After the red giant stage, what determines whether a star will become a white dwarf or a supernova? (A) the mass of the star (B) the diameter of the star (C) the brightness of the star (D) the type of gas in the star

Answer: (A) the mass of the star

Answer: (B) the diameter of the star

Question: Most stars in the Milky Way are like the Sun. The Sun will eventually become a red giant. After the red giant stage, what determines whether a star will become a white dwarf or a supernova? (A) the mass of the star (B) the diameter of the star (C) the brightness of the star (D) the type of gas in the star Answer: (A) the mass of the star

Mercury_7222040

How should researchers share their findings with other scientists to validate their study of the effectiveness of a new medication?

B

Question: How should researchers share their findings with other scientists to validate their study of the effectiveness of a new medication? (A) e-mail the research results to local newspapers (B) publish the research results in a scientific journal (C) publish the results in brochures for doctors (D) discuss the research results on the Internet

Answer: (B) publish the research results in a scientific journal

Answer: (C) publish the results in brochures for doctors

Question: How should researchers share their findings with other scientists to validate their study of the effectiveness of a new medication? (A) e-mail the research results to local newspapers (B) publish the research results in a scientific journal (C) publish the results in brochures for doctors (D) discuss the research results on the Internet Answer: (B) publish the research results in a scientific journal

Mercury_7015943

Gaseous sulfur dioxide is a compound that combines with water in the atmosphere to form acid rain. What is the primary source of sulfur dioxide?

B

Question: Gaseous sulfur dioxide is a compound that combines with water in the atmosphere to form acid rain. What is the primary source of sulfur dioxide? (A) volcanic emissions (B) combustion of fossil fuels (C) destruction of tropical forests (D) mining and mineral extraction

Answer: (B) combustion of fossil fuels

Answer: (A) volcanic emissions

Question: Gaseous sulfur dioxide is a compound that combines with water in the atmosphere to form acid rain. What is the primary source of sulfur dioxide? (A) volcanic emissions (B) combustion of fossil fuels (C) destruction of tropical forests (D) mining and mineral extraction Answer: (B) combustion of fossil fuels

MDSA_2007_5_20

The motion of Earth is responsible for several celestial events. Which of the following events is caused by Earth revolving around the sun?

A

Question: The motion of Earth is responsible for several celestial events. Which of the following events is caused by Earth revolving around the sun? (A) the days in a year (B) the hours in a day (C) the changes in the atmosphere of Earth (D) the position of the constellations in space

Answer: (A) the days in a year

Answer: (B) the hours in a day

Question: The motion of Earth is responsible for several celestial events. Which of the following events is caused by Earth revolving around the sun? (A) the days in a year (B) the hours in a day (C) the changes in the atmosphere of Earth (D) the position of the constellations in space Answer: (A) the days in a year

Mercury_7013773

What takes place as a light wave enters a denser medium?

C

Question: What takes place as a light wave enters a denser medium? (A) it is reflected (B) it is absorbed (C) it is refracted (D) it is compressed

Answer: (C) it is refracted

Answer: (A) it is reflected

Question: What takes place as a light wave enters a denser medium? (A) it is reflected (B) it is absorbed (C) it is refracted (D) it is compressed Answer: (C) it is refracted

Mercury_7203263

Deforestation in the rainforest can lead to localized extinctions of populations of some organisms. Once an area is deforested, which is most likely to decrease and result in organisms' extinctions?

D

Question: Deforestation in the rainforest can lead to localized extinctions of populations of some organisms. Once an area is deforested, which is most likely to decrease and result in organisms' extinctions? (A) the amount of annual rainfall (B) competition between consumers (C) the energy available to producers (D) diversity of the resources in the habitat

Answer: (D) diversity of the resources in the habitat

Answer: (C) the energy available to producers

Question: Deforestation in the rainforest can lead to localized extinctions of populations of some organisms. Once an area is deforested, which is most likely to decrease and result in organisms' extinctions? (A) the amount of annual rainfall (B) competition between consumers (C) the energy available to producers (D) diversity of the resources in the habitat Answer: (D) diversity of the resources in the habitat

MCAS_2008_8_5598

Which of the following causes a ship’s iron anchor to sink to the ocean floor when it is released overboard?

B

Question: Which of the following causes a ship’s iron anchor to sink to the ocean floor when it is released overboard? (A) chemical forces (B) gravity (C) magnetism (D) nuclear forces

Answer: (B) gravity

Answer: (C) magnetism

Question: Which of the following causes a ship’s iron anchor to sink to the ocean floor when it is released overboard? (A) chemical forces (B) gravity (C) magnetism (D) nuclear forces Answer: (B) gravity

MEAP_2005_8_18

In clear weather, a bright light can be seen for a long distance. In conditions of heavy fog, the visibility is greatly reduced. Which of the following explains the reduced visibility?

B

Question: In clear weather, a bright light can be seen for a long distance. In conditions of heavy fog, the visibility is greatly reduced. Which of the following explains the reduced visibility? (A) Light is refracted by water vapor in the air. (B) Light is scattered by water droplets in the air. (C) Light is absorbed by water vapor near the ground. (D) Light is reflected by water droplets on the ground.

Answer: (B) Light is scattered by water droplets in the air.

Answer: (D) Light is reflected by water droplets on the ground.

Question: In clear weather, a bright light can be seen for a long distance. In conditions of heavy fog, the visibility is greatly reduced. Which of the following explains the reduced visibility? (A) Light is refracted by water vapor in the air. (B) Light is scattered by water droplets in the air. (C) Light is absorbed by water vapor near the ground. (D) Light is reflected by water droplets on the ground. Answer: (B) Light is scattered by water droplets in the air.

Mercury_192255

When the pesticide DDT was first used, it killed nearly every mosquito it touched. Within a few years, however, many mosquitoes became resistant to DDT and survived. What enabled this to happen?

D

Question: When the pesticide DDT was first used, it killed nearly every mosquito it touched. Within a few years, however, many mosquitoes became resistant to DDT and survived. What enabled this to happen? (A) meiosis (B) migration (C) immune responses (D) gene mutations

Answer: (D) gene mutations

Answer: (B) migration

Question: When the pesticide DDT was first used, it killed nearly every mosquito it touched. Within a few years, however, many mosquitoes became resistant to DDT and survived. What enabled this to happen? (A) meiosis (B) migration (C) immune responses (D) gene mutations Answer: (D) gene mutations

Mercury_SC_401274

When air is heated, it will most likely

B

Question: When air is heated, it will most likely (A) expand and fall. (B) expand and rise. (C) condense and fall. (D) condense and rise.

Answer: (B) expand and rise.

Answer: (A) expand and fall.

Question: When air is heated, it will most likely (A) expand and fall. (B) expand and rise. (C) condense and fall. (D) condense and rise. Answer: (B) expand and rise.

NYSEDREGENTS_2006_8_5

The wheels and gears of a machine are greased in order to decrease

4

Question: The wheels and gears of a machine are greased in order to decrease (1) potential energy (2) efficiency (3) output (4) friction

Answer: (4) friction

Answer: (2) efficiency

Question: The wheels and gears of a machine are greased in order to decrease (1) potential energy (2) efficiency (3) output (4) friction Answer: (4) friction

Mercury_7180915

A student learns that one year on Mercury is about 88 Earth days. This means it takes 88 Earth days for Mercury to

D

Question: A student learns that one year on Mercury is about 88 Earth days. This means it takes 88 Earth days for Mercury to (A) travel in orbit around its moon. (B) complete one rotation on its axis. (C) switch orbits with the nearest planet. (D) make one complete orbit around the Sun.

Answer: (D) make one complete orbit around the Sun.

Answer: (A) travel in orbit around its moon.

Question: A student learns that one year on Mercury is about 88 Earth days. This means it takes 88 Earth days for Mercury to (A) travel in orbit around its moon. (B) complete one rotation on its axis. (C) switch orbits with the nearest planet. (D) make one complete orbit around the Sun. Answer: (D) make one complete orbit around the Sun.

Mercury_7135345

Two processes are involved in the formation of a sand dune. Which two processes best describe how a sand dune forms?

A

Question: Two processes are involved in the formation of a sand dune. Which two processes best describe how a sand dune forms? (A) wind erosion then deposition (B) plate movement then deposition (C) wind erosion then water erosion (D) water erosion then plate movement

Answer: (A) wind erosion then deposition

Answer: (C) wind erosion then water erosion

Question: Two processes are involved in the formation of a sand dune. Which two processes best describe how a sand dune forms? (A) wind erosion then deposition (B) plate movement then deposition (C) wind erosion then water erosion (D) water erosion then plate movement Answer: (A) wind erosion then deposition

Mercury_401021

When a student uses the equation, mass multiplied by change in temperature multiplied by specific heat, what is being calculated? q = m \times C \times \Delta T

D

Question: When a student uses the equation, mass multiplied by change in temperature multiplied by specific heat, what is being calculated? q = m \times C \times \Delta T (A) a phase change (B) stored energy (C) heat convection (D) heat gain or heat loss

Answer: (D) heat gain or heat loss

Answer: (B) stored energy

Question: When a student uses the equation, mass multiplied by change in temperature multiplied by specific heat, what is being calculated? q = m \times C \times \Delta T (A) a phase change (B) stored energy (C) heat convection (D) heat gain or heat loss Answer: (D) heat gain or heat loss

Mercury_7214305

Which rock is most likely to contain fossil seashells?

D

Question: Which rock is most likely to contain fossil seashells? (A) basalt (B) gneiss (C) granite (D) limestone

Answer: (D) limestone

Answer: (C) granite

Question: Which rock is most likely to contain fossil seashells? (A) basalt (B) gneiss (C) granite (D) limestone Answer: (D) limestone

ACTAAP_2007_7_16

Which occurs as a result of Earth's tilt on its rotating axis?

C

Question: Which occurs as a result of Earth's tilt on its rotating axis? (A) movement of the tides (B) prevalent or trade winds (C) seasonal changes in the climate (D) light and dark changes of day and night

Answer: (C) seasonal changes in the climate

Answer: (A) movement of the tides

Question: Which occurs as a result of Earth's tilt on its rotating axis? (A) movement of the tides (B) prevalent or trade winds (C) seasonal changes in the climate (D) light and dark changes of day and night Answer: (C) seasonal changes in the climate

Mercury_402066

Planets remain in orbit around the Sun because of

A

Question: Planets remain in orbit around the Sun because of (A) gravity. (B) friction. (C) solar energy. (D) centrifugal force.

Answer: (A) gravity.

Answer: (D) centrifugal force.

Question: Planets remain in orbit around the Sun because of (A) gravity. (B) friction. (C) solar energy. (D) centrifugal force. Answer: (A) gravity.

Mercury_SC_405869

Which cells help to destroy pathogens such as bacteria that enter the human body?

C

Question: Which cells help to destroy pathogens such as bacteria that enter the human body? (A) red blood cells (B) liver cells (C) white blood cells (D) brain cells

Answer: (C) white blood cells

Answer: (A) red blood cells

Question: Which cells help to destroy pathogens such as bacteria that enter the human body? (A) red blood cells (B) liver cells (C) white blood cells (D) brain cells Answer: (C) white blood cells

Mercury_7041318

Eye color in human beings is an

C

Question: Eye color in human beings is an (A) instinct. (B) acquired trait. (C) inherited trait. (D) environmentally influenced trait.

Answer: (C) inherited trait.

Answer: (B) acquired trait.

Question: Eye color in human beings is an (A) instinct. (B) acquired trait. (C) inherited trait. (D) environmentally influenced trait. Answer: (C) inherited trait.

NYSEDREGENTS_2004_8_5

If a species is no longer able to reproduce, it will

3

Question: If a species is no longer able to reproduce, it will (1) adapt to its environment (2) become immune to disease (3) become extinct (4) increase its population

Answer: (3) become extinct

Answer: (1) adapt to its environment

Question: If a species is no longer able to reproduce, it will (1) adapt to its environment (2) become immune to disease (3) become extinct (4) increase its population Answer: (3) become extinct

TIMSS_2003_4_pg28

Which of these is hottest?

D

Question: Which of these is hottest? (A) The Earth (B) Mars (C) The Moon (D) The Sun

Answer: (D) The Sun

Answer: (A) The Earth

Question: Which of these is hottest? (A) The Earth (B) Mars (C) The Moon (D) The Sun Answer: (D) The Sun

Mercury_7193095

In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change?

C

Question: In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change? (A) increased inorganic matter in soil (B) increased use of fertilizers on crops (C) increased buildup of greenhouse gases (D) increased rainfall rates near power plants

Answer: (C) increased buildup of greenhouse gases

Answer: (A) increased inorganic matter in soil

Question: In large industrial cities, the emissions from fossil fuels cause the atmosphere to change. Which process allows the atmosphere to change? (A) increased inorganic matter in soil (B) increased use of fertilizers on crops (C) increased buildup of greenhouse gases (D) increased rainfall rates near power plants Answer: (C) increased buildup of greenhouse gases

Mercury_7158848

Which is the most likely response of a human to an increase in temperature?

A

Question: Which is the most likely response of a human to an increase in temperature? (A) increasing the amount of perspiration (B) increasing waste elimination from the bladder (C) a reduction in the desire for liquids (D) a contraction in blood vessels in the skin

Answer: (A) increasing the amount of perspiration

Answer: (D) a contraction in blood vessels in the skin

Question: Which is the most likely response of a human to an increase in temperature? (A) increasing the amount of perspiration (B) increasing waste elimination from the bladder (C) a reduction in the desire for liquids (D) a contraction in blood vessels in the skin Answer: (A) increasing the amount of perspiration

Mercury_7282100

An organism's traits are largely determined by the genetic makeup of its parents. A mutation in which kinds of cells in a parent could cause a new trait to appear in the parent's offspring?

A

Question: An organism's traits are largely determined by the genetic makeup of its parents. A mutation in which kinds of cells in a parent could cause a new trait to appear in the parent's offspring? (A) sperm or egg (B) egg or nerve (C) nerve or muscle (D) muscle or sperm

Answer: (A) sperm or egg

Answer: (D) muscle or sperm

Question: An organism's traits are largely determined by the genetic makeup of its parents. A mutation in which kinds of cells in a parent could cause a new trait to appear in the parent's offspring? (A) sperm or egg (B) egg or nerve (C) nerve or muscle (D) muscle or sperm Answer: (A) sperm or egg

AIMS_2009_4_7

Electricity to play your radio can be made using renewable or nonrenewable resources. Which of the following resources are renewable?

B

Question: Electricity to play your radio can be made using renewable or nonrenewable resources. Which of the following resources are renewable? (A) wind and oil (B) wind and sunlight (C) natural gas and oil (D) natural gas and coal

Answer: (B) wind and sunlight

Answer: (A) wind and oil

Question: Electricity to play your radio can be made using renewable or nonrenewable resources. Which of the following resources are renewable? (A) wind and oil (B) wind and sunlight (C) natural gas and oil (D) natural gas and coal Answer: (B) wind and sunlight

Mercury_SC_401200

The action of turning off the water while brushing teeth is an example of

C

Question: The action of turning off the water while brushing teeth is an example of (A) recycling. (B) adaptation. (C) conservation. (D) resourcefulness.

Answer: (C) conservation.

Answer: (A) recycling.

Question: The action of turning off the water while brushing teeth is an example of (A) recycling. (B) adaptation. (C) conservation. (D) resourcefulness. Answer: (C) conservation.

Mercury_SC_401177

Which objects are the most useful for collecting data on the speed of a toy car?

C

Question: Which objects are the most useful for collecting data on the speed of a toy car? (A) microscope, computer, ruler (B) thermometer, calculator, magnet (C) stopwatch, calculator, meter stick (D) camera, digital recorder, safety goggles

Answer: (C) stopwatch, calculator, meter stick

Answer: (B) thermometer, calculator, magnet

Question: Which objects are the most useful for collecting data on the speed of a toy car? (A) microscope, computer, ruler (B) thermometer, calculator, magnet (C) stopwatch, calculator, meter stick (D) camera, digital recorder, safety goggles Answer: (C) stopwatch, calculator, meter stick

NYSEDREGENTS_2006_8_37

Some microorganisms cause human disease. Other microorganisms are used in making cheese, yogurt, and bread. Based on this information, the relationship between humans and microorganisms can be

3

Question: Some microorganisms cause human disease. Other microorganisms are used in making cheese, yogurt, and bread. Based on this information, the relationship between humans and microorganisms can be (1) beneficial, only (2) harmful, only (3) beneficial or harmful

Answer: (3) beneficial or harmful

Answer: (1) beneficial, only

Question: Some microorganisms cause human disease. Other microorganisms are used in making cheese, yogurt, and bread. Based on this information, the relationship between humans and microorganisms can be (1) beneficial, only (2) harmful, only (3) beneficial or harmful Answer: (3) beneficial or harmful

Mercury_SC_417676

Which of these objects is visible because it reflects light toward the eye?

D

Question: Which of these objects is visible because it reflects light toward the eye? (A) burning candle (B) flashlight bulb (C) glowing campfire log (D) shiny metallic balloon

Answer: (D) shiny metallic balloon

Answer: (B) flashlight bulb

Question: Which of these objects is visible because it reflects light toward the eye? (A) burning candle (B) flashlight bulb (C) glowing campfire log (D) shiny metallic balloon Answer: (D) shiny metallic balloon

Mercury_400219

Which dog trait is a learned behavior?

D

Question: Which dog trait is a learned behavior? (A) blinking its eyes (B) scratching an itch (C) panting to cool off (D) jumping to catch a ball

Answer: (D) jumping to catch a ball

Answer: (A) blinking its eyes

Question: Which dog trait is a learned behavior? (A) blinking its eyes (B) scratching an itch (C) panting to cool off (D) jumping to catch a ball Answer: (D) jumping to catch a ball

Mercury_7037503

When an atom has a neutral charge, which particles within the atom have equal numbers?

B

Question: When an atom has a neutral charge, which particles within the atom have equal numbers? (A) electrons and neutrons (B) protons and electrons (C) neutrons and protons (D) ions and neutrons

Answer: (B) protons and electrons

Answer: (C) neutrons and protons

Question: When an atom has a neutral charge, which particles within the atom have equal numbers? (A) electrons and neutrons (B) protons and electrons (C) neutrons and protons (D) ions and neutrons Answer: (B) protons and electrons

VASoL_2009_3_33

A paper bag is ripped into pieces. Which of these BEST describes the pieces of the bag?

C

Question: A paper bag is ripped into pieces. Which of these BEST describes the pieces of the bag? (A) Stronger than the whole bag (B) Thicker than the whole bag (C) Smaller than the whole bag (D) Darker than the whole bag

Answer: (C) Smaller than the whole bag

Answer: (B) Thicker than the whole bag

Question: A paper bag is ripped into pieces. Which of these BEST describes the pieces of the bag? (A) Stronger than the whole bag (B) Thicker than the whole bag (C) Smaller than the whole bag (D) Darker than the whole bag Answer: (C) Smaller than the whole bag

Mercury_SC_406702

A lizard most likely would be protected from its enemies if it has which characteristic?

D

Question: A lizard most likely would be protected from its enemies if it has which characteristic? (A) claws to catch prey (B) a long tail to climb trees (C) eyes that can see far distances (D) skin color that matches its habitat

Answer: (D) skin color that matches its habitat

Answer: (A) claws to catch prey

Question: A lizard most likely would be protected from its enemies if it has which characteristic? (A) claws to catch prey (B) a long tail to climb trees (C) eyes that can see far distances (D) skin color that matches its habitat Answer: (D) skin color that matches its habitat

Mercury_SC_401156

Copper is used in house wiring because it is

C

Question: Copper is used in house wiring because it is (A) magnetic. (B) an insulator. (C) an electrical conductor. (D) hard to bend into new shapes.

Answer: (C) an electrical conductor.

Answer: (B) an insulator.

Question: Copper is used in house wiring because it is (A) magnetic. (B) an insulator. (C) an electrical conductor. (D) hard to bend into new shapes. Answer: (C) an electrical conductor.

Mercury_SC_400602

Which process causes light to bend and form a rainbow?

C

Question: Which process causes light to bend and form a rainbow? (A) frequency (B) resonance (C) refraction (D) reflection

Answer: (C) refraction

Answer: (D) reflection

Question: Which process causes light to bend and form a rainbow? (A) frequency (B) resonance (C) refraction (D) reflection Answer: (C) refraction

MCAS_2008_8_5713

Sugar is composed of carbon, hydrogen, and oxygen. Sugar is an example of which of the following?

B

Question: Sugar is composed of carbon, hydrogen, and oxygen. Sugar is an example of which of the following? (A) an atom (B) a compound (C) an electron (D) a mixture

Answer: (B) a compound

Answer: (A) an atom

Question: Sugar is composed of carbon, hydrogen, and oxygen. Sugar is an example of which of the following? (A) an atom (B) a compound (C) an electron (D) a mixture Answer: (B) a compound

MCAS_2006_9_4-v1

The tendency of a stationary object to resist being put into motion is known as

B

Question: The tendency of a stationary object to resist being put into motion is known as (A) acceleration. (B) inertia. (C) weight. (D) velocity.

Answer: (B) inertia.

Answer: (A) acceleration.

Question: The tendency of a stationary object to resist being put into motion is known as (A) acceleration. (B) inertia. (C) weight. (D) velocity. Answer: (B) inertia.