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Many Christians celebrate Christmas by attending church, and with prayers and singing. And each year there are Bible readings from the Gospels that tell the story of the birth of Jesus.
Christmas traditions are of several types. There are traditions of the church, traditions which are public celebrations and traditions that are kept by families. These traditions are different in different times, places, cultures and even families.
The celebration of Christmas is a very important time for churches. Almost every church has special services or celebrations. Here are some of the ways that churches celebrate Christmas.
It is the custom in many churches to set up a Crib (or "Creche") scene of the "Nativity" or birth of Jesus. The first scene of this type was set up by St. Francis of Assisi in the 13th century. They have been very popular in Italy ever since then, and the custom has spread to other countries.
Nativity scenes can be large with life-sized statues, or they can be tiny enough to fit in a matchbox. They are made of many different things including carved and painted wood, brightly coloured ceramics (pottery), painted paper glued to boards, and mixtures of material with clay, wood, cloth, straw and metal used for different parts.
The Advent wreath is a circle of leaves, usually pine boughs, ivy and holly, with 4 (or sometimes 5) candles in it which is hung up in a church. The candles are lit on each Sunday in Advent, and the central candle is lit on Christmas morning. Churches are often decked with green branches and leaves, and many churches also have a Christmas tree.
A popular tradition in many churches is the Carol Service which is often lit only by candles. The carol service generally has lots of singing and Bible readings. There is a tradition in England which began in the Temple Church in London and has now spread to many other places for a service of Nine Lessons and Carols. The lessons are Bible readings. Some carols are sung by a choir and others by the choir and people (the congregation). Every year one of these services is recorded in a large English Church, often King's College Chapel, Cambridge, and is broadcast on radio and television to be enjoyed by people who love good music and carol singing, but particularly for people who cannot go to a Christmas service.
Many cities and towns celebrate Christmas by putting up decorations. These may be banners and bunting which are strung from buildings or lampposts. They may be Christmas lights which can also decorate buildings and street trees. Many large cities put up a huge Christmas tree in a public place, such as those in Trafalgar Square in London, Times Square in New York and Martin Place in Sydney. This is often combined with an appeal to the people of the city to give money or gifts to help the poor and needy.
In many cities, the usual shopping hours are made longer before Christmas so that workers have more time to buy Christmas food and presents. Shop windows are often decorated with Christmas scenes, with large department stores often having animated scenes to entertain children. Shopping malls and big stores often have a Santa Claus, who sits on a throne, while children tell him what they want for Christmas, and have their photos taken.
Many towns hold Christmas parades, street entertainment and concerts. Some towns have a tradition of carols with a choir and entertainers in the town hall, while in Australia and New Zealand, these concerts of Christmas entertainment and carols are usually held outdoors, in parks or even on beaches, with families bringing picnics. The arrival of Santa Claus at the end of the evening is accompanied by a firework display.
A traditional part of Christmas is the theatre entertainment. This includes the performance of classical music such as Handel's Messiah as well as orchestral concerts and band recitals. Pantomimes are often played at Christmas and favourites include "Peter Pan and Wendy" and "Cinderella". Many children's movies are released during the Christmas season.
Because many people feel very lonely, hungry and sad at Christmas, many cities, churches, charities and service organisations try to help the poor and lonely by providing Christmas food and gifts for poor families, and Christmas parties for people who are hungry or who are lonely and without any friends or family.
Family celebrations are often very different from each other, depending on where a family comes from, and the customs that have grown in particular families.
Most families think of Christmas as a time to get together with other members of the family. People often travel from far away to be with other family members at Christmas. Those people who cannot travel often make long-distance phone calls on Christmas Day. Many people also see Christmas as a time to reach out to others that they know might be lonely, and invite them to dinner on Christmas Day. Christmas is seen as a time for people of all ages to have fun together, for cousins to get to know each other, for grandparents to see their grandchildren and for the family to admire the babies that have been born during the year. Big family parties are usually a time of joy, but some families often talk about their disagreements and have big fights at Christmas time.
Family traditions are very different. Some families might all go off to church together, to a Carol Service, a Midnight Mass, or a Christmas Morning service. Some families are pulled out of bed very early by children who want to open their presents. In other families, presents are given on St. Nicholas Day, on Christmas Eve or not until after church on Christmas morning. The Christmas feast might start on Christmas Eve, with a special breakfast on Christmas morning, or at midday on Christmas Day.
Some families have a tradition of carol singing, and might go around the streets, to hospitals and other such places singing with members of their church. Other families like to watch certain television programs together, which might include carol services and the Queen's Message. Some families use Christmas as a time to play music and sing together, or to read a favourite book such as "A Christmas Carol" by Charles Dickens. In countries in the Southern Hemisphere, a visit to the beach or a swim in a pool is often part of the Christmas Day tradition.
Christmas Dinner, usually eaten in the middle of the day, is an important part of the family celebration. The food differs from country to country and also from family to family. In the Northern Hemisphere, roasted meat and vegetables is generally the main course of the meal. Usually one of several types of meat are served, which may include turkey, chicken, ham, roast beef or lamb. There are often several courses, with special treats that are usually only eaten at Christmas.
In English-speaking countries, the traditional dessert is Christmas plum pudding. Nowadays these puddings are often bought from bakers, but many people make their own to a family recipe. The tradition came from the Middle Ages when the pudding was used to preserve some of the fruit from the autumn until the mid-winter. A traditional pudding is baked six weeks before Christmas and is left tied up in a cloth or basin with a cloth covering, in a cool place. Stirring the pudding is sometimes a family tradition, with everyone making a wish as they stir. Traditionally a silver coin would be stirred into the pudding, to bring luck to the person who found it. Nowadays most coins cannot be used because they are not made of silver so taste horrible and may be poisonous. Some families use old coins or silver charms. On Christmas Day the pudding must be boiled in a pot for several hours. When it is served, the cloth is cut off, brandy is poured onto the pudding, and it is set on fire before it is carried to the table. Christmas crackers are used to decorate and are often opened prior to serving dish or starter course. It is usually served with hard sauce.
Many families have a Christmas cake or a special bread instead of a pudding (or as well as a pudding). These are very different depending on the country, but often have marzipan which is made from almonds and is traditional in many countries at Christmas. In France "Buche de Noäl" or gingerbread men and women are decorated and hung on the Christmas tree. In Scotland a pastry biscuit called shortbread is made and has become a popular tradition in many countries. A German tradition is "pfeffernuss", spiced cookies rolled in powdered sugar. Other Christmas food includes raisins, sultanas, ginger, Greek baklava, almonds, chocolates, caramel toffee, candy canes and oranges.
Many families also prepare mulled wine which is warmed with cinnamon and nutmeg or egg nogs, a sweet drink made of milk, sugar, eggs, nutmeg and sometimes alcohol.
In the Southern Hemisphere, the traditional roast dinner is often replaced with cold cuts of meat, and served with salads. The first course might be prawn cocktail or a cold soup like borsch. The plum pudding might be served with ice cream. White wine and beer are both served cold (beer is kept in a refrigerator). Christmas dinner may be served on the veranda, or sometimes as a picnic.
In most homes when Christmas is celebrated, people set up a Christmas tree in the house. This old Yuletide custom began in Germany as the "Tannenbaum" (German for "Fir Tree"). These are traditionally evergreens, the best type being the Fir Tree which does not shed its needles or lose its fragrance. The tree may be a cut tree that is bought from a plantation or taken from the forest. Artificial trees are sometimes preferred to real trees. The Christmas tree is decorated with lights, shiny coloured balls, sparkly tinsel and other ornaments. A wreath of leaves or pine is often put on the front door of a house as a sign of welcome. Other plants that have special significance at Christmas are holly which is used as decoration and mistletoe which is hung in the centre of a room. The tradition is that people who meet under the mistletoe must kiss.
Many people decorate their homes at Christmas time. These decorations and the Christmas tree are generally inside, but may be put where they can also be seen through a window by people passing by. In the mid 20th century there grew up a custom for decorating the outside of houses as well. These decorations may be just a few lights around the porch, or hundreds of lights and colourful Christmas figures decorating the whole house and garden. Some neighbourhoods hold competitions for the best-decorated house, and driving around the streets to look at them has become another family tradition.
The giving of gifts at Christmas comes from several different ideas. One is that God gave his son, Jesus, to the world at Christmas. There is also the story of the Wise Men who came to the baby Jesus with three gifts, gold, frankincense and myrrh. For many centuries it has been the custom for people to give small gifts at Christmas, and also to give generously to the poor and needy to help them through the winter. Another tradition has become linked to this one, and the result is the tradition of Santa Claus, or Father Christmas as he is sometimes called, and who is nowadays thought by many children to be the bringer of presents and happiness.
In the 4th century, in a Greek village that is now part of Turkey, there was a good man who would secretly given presents to the poor to help them. He became a bishop and is called Saint Nicholas. Over the centuries, he became a very popular saint and lots of churches were named after him. He was very popular in places where there were lots of sailors. One of those places was the Netherlands. In the Netherlands and many other European countries, presents are given on the feast of Saint Nicholas, 6 December. Traditionally, the presents are not big, and are sometimes hidden, or have a funny joke or poem that must be read. In many towns of Europe a man dressed in bishop's robes comes on a horse or in a boat, acting as St. Nicholas. His name was often shortened to Sante Claus, or Santa Claus in English.
In English speaking countries, where presents are usually given on Christmas Day, not 6 December, Santa Claus, (or Father Christmas) is usually thought of as coming on Christmas Night, when his magic sleigh is pulled across the sky by reindeer, and he comes into houses through the chimney. While in Europe, children put out their shoes for St. Nicholas, the English tradition is to hang up stockings (or long socks) in front of the fireplace. Santa Claus would traditionally fill the socks or shoes with nuts, raisins, chocolates and an orange. Nowadays children usually get much more expensive presents, and hang up pillow cases or have the presents in a big pile under the Christmas tree.
Another Christmas tradition is the sending of cards to friends and relatives. These contain warm greetings and may also have a letter telling all the things that have happened to the person or family during the year.
Adjective
An adjective is a word that describes a noun or pronoun. Nouns are words that name a place, a person, a thing, or an idea. An adjective is a word that gives more information about the noun that goes with it. It is a part of speech.
Often, the adjective is before the noun it describes. Sometimes an adjective is not followed by a noun:
An adjective is a word that gives instant information about a noun to make a clear picture of the noun in the mind of the reader and create a feeling to the writer.
Sometimes there are different forms of the same adjective. If one joke makes a person laugh more than another joke, then that joke is funnier. This is called the comparative form. The day that is colder than any other is the coldest day. This is the superlative form of "cold". Some adjectives need additional words when we want to compare them. For instance, one car may be cheaper than another, but the second car may be more reliable (we use "more reliable", instead of "reliabler"). Reliable means worthy of trust.
The rule is:
For short adjectives ending in a consonant like "cold," "black," or "fast," one adds the suffix er to make a comparison of greater magnitude. Example: "The North Pole is colder than Florida." The greatest possible comparison is made by adding the suffix est. Example: "The North Pole is the coldest place on the Earth." For long adjectives like intelligent, conscientious, comprehensive, one uses the word more to make a comparison of greater magnitude. Example: "Children are more intelligent than adults."
A superlative makes the greatest possible comparison. One uses the word most. Example: "She is the most conscientious person I have ever known."
In the English language, it is possible for a noun to modify (describe) another noun. Example: take the noun "angel" and the noun "face." Put them together and the result is "angel face." The first noun is acting as an adjective, because it is giving us information about the second noun.
Adjectives are words we use to describe the noun. Simple words like "warm" and "fat" are adjectives commonly used in writing. One can make adverbs from some adjectives by adding the suffix ly. Example: take the adjective "beautiful," the adverb is beautifully. One can do it the other way around: take an adverb like "presumably," the adjective is "presumable". "Presumable innocence" means the accused is assumed to be innocent until proven guilty.
The adjective "guilty" becomes the adverb "guiltily" and vice versa (the opposite), the adverb "guiltily" becomes the adjective "guilty."
• acid • angry • • beautiful • black • boiling • • • brown • • chemical • • • clear • • complex • • cut • deep • dependent • • elastic • electric • equal • fat • fertile • • • flat • free • • • general • good • • gray • hanging • happy • • healthy • high • • • kind • like • living • long • male • married • material • medical • military • natural • necessary • new • • • parallel • past • physical • political • • • • private • • quick • • • red • • • right • round • • second • • • sharp • • • • straight • • • sweet • • • • • true • violent • warm • wet • wide • wise • yellow •
Paper
Modern paper is a thin material of (mostly) wood fibres pressed together. People write on paper with a pencil or pen, and books are made of paper. Paper can absorb liquids such as water, so people can clean things with paper. There are many types of paper.
The pulp and paper industry comprises companies that use wood as raw material and produce pulp, paper, board and other cellulose-based products.
Modern paper is normally made from wood pulp. Wood is ground up and mixed with water and other chemicals to make a thin liquid called "paper pulp". Paper pulp can be bleached to make paper more white, and dyes can be added to make colored paper. This pulp is pressed into sheets of paper. Printing is often done on paper before the paper is cut into sheets. Newsprint paper (newspaper) comes in a huge roll, and goes through the printing process as one continuous sheet. It is cut by a machine-driven guillotine blade later. Folding comes last, then packing for distribution.
Sometimes paper is made heavier and more glossy (shiny) by adding clay, and by 'milling' it. Milling is done by squeezing the paper through a series of rollers. Sometimes paper is made from used or waste paper: this is recycling.
Not all paper is made from wood. Other kinds of fiber can be used. People still make paper from cotton, linen and hemp for special purposes.
Writing started long before the invention of paper. People wrote on many kinds of material. They wrote on cloth, on the stone walls and on wood. In Mesopotamia the Sumerians wrote on clay tablets, many of which have survived today. In Europe, people wrote on vellum.
Many centuries ago – as early as the 3rd millennium BC (that's over 2000 BC) – people in Egypt made a kind of paper from the papyrus plant. This is where the word 'paper' comes from. The people of Greece and Rome learned to do this too. The Romans wrote on parchment (made from animal skin), on waxed tablets and on wood (see Vindolanda).
In China 105 AD, the eunuch Cai Lun told his Emperor he had made paper. They had previously used bamboo and silk. The material used in this ancient paper included cotton rags, hemp, various plant fibres and old fish nets. The oldest existing paper with writing on it was found in the ruins of a watchtower in the Great Wall of China. It dates to about 150 AD. Even earlier paper (but with no writing on it) has been claimed: "The oldest surviving piece of paper in the world is made of hemp fibers, discovered in 1957 in a tomb near Xian, China, and dates from between the years 140 and 87 BC". Paper-making was regarded by the Chinese as so valuable that they kept it secret as long as they could.
People in Japan learned how to make paper with fibres of the mulberry tree, around 610 AD. This is called Japanese paper or "Washi". The Chinese invention spread to India, and then to the Middle East, and then to Italy.
An opportunity occurred after The Battle of Talas in 751. Then an Arab army captured soldiers of the Chinese. There were some paper makers among the captured soldiers. From them, paper-making spread throughout the Islamic world. In 757, a paper mill was built at Samarkand. People learned to use linen as paper raw material and to use starch made from flour as an additive.
The Italians used hemp and linen rags. In 1276 the first Italian paper mill was built at Fabriano and, until the 14 century, Italy was a paper supplier in Europe. In 1282 the first watermark was introduced in Bologna.
Paper was hard to make. It was cheaper than the old writing materials, but still expensive. A mechanical paper maker was conceived in France 1798, but invented in England. At least one paper mill was using them by 1812. Now the process was cheaper but the raw material was still expensive.
In 1840 Friedrich Gottlob Keller Invented a machine that could make pulp for paper out of wood fibres (instead of the expensive rag paper). Paper became cheap enough for everyone to buy. Around the same time, other inventions were made, like the pencil, the fountain pen, and a printing press that used steam power. With this new information technology, people wrote more letters, made more books and newspapers, and kept more records of what they did.
Today, some of the largest paper-producing countries are China, USA, Canada, Finland, Sweden and Russia. Paper is produced in large factories called "paper mills". They produce hundreds of thousands of tons of paper each year.
Paper is used for writing and printing. Books, magazines and newspapers are printed on paper.
Paper is often used for money. Paper used for money is made in special ways. It does not use wood fiber. It is mostly cotton with additives to make it hard for people to print their own money. A piece of paper money is called a banknote, a bill or a note.
Paper can be used for cleaning. Special forms of paper are used, such as paper towels, facial tissues or toilet paper.
Pretty paper can be used as decoration. It can be pasted onto the walls of a room; this is called wallpaper. Paper can be used to wrap gifts. This is called wrapping paper or gift wrap.
Some kinds of paper are strong and can be used in boxes and other packaging material. Sometimes several layers of paper are held together with glue, to make cardboard.
Power
Power has different meanings when talking about different subjects:
States of matter
There are four common states of matter (or "phases") in the universe: solid, liquid, gas, and plasma.
The state of matter affects a substance's properties. Examples of those properties include density, viscosity (how well it flows), malleability (how easy it is to bend), and conductivity. Changes between states of matter are often reversible.
In a "solid", the positions of atoms are fixed relative to each other over a long time. That is due to the cohesion or "friction" between molecules. This cohesion is provided by metallic, covalent or ionic bonds. Only solids can be pushed on by a force without changing shape, which means that they can be resistant to deformation. Solids also tend to be strong enough to hold their own shape in a container. Solids are generally denser than liquids. Solid becoming a gas is called sublimation.
In a "liquid", molecules are attracted to each other strongly enough to keep them in contact, but not strongly enough to hold a particular structure. The molecules can continually move with respect to each other. This means that liquids can flow smoothly, but not as smoothly as gases. Liquids will tend to take the shape of a container that they are in. Liquids are generally less dense than solids, but denser than gases.
In a "gas", the chemical bonds are not strong enough to hold atoms or molecules together, and from this a gas is a collection of independent, unbonded molecules which interact mainly by collision. Gases tend to take the shape of their container, and are less dense than both solids and liquids.
Gases have weaker forces of attraction than solids and liquids. Gas becoming a solid directly is called deposition.
Gases can sometimes turn directly into solids without passing through a fluid stage. That is called desublimation. You see it in the hoary frost which forms on window-panes in cold climates. It is the reverse of sublimation.
"Plasmas" are gases that have so much energy that electrons of an atom cannot stay in orbit around one atomic nucleus. The atomic ions and free electrons mix around like a hot soup.
Because the positive and negative charged particles are not stuck together, plasma is a good conductor of electricity. For example, air is not good at conducting electricity. However, in a bolt of lightning, the atoms in air get so much energy that they no longer can hold on to their electrons, and become a plasma for a brief time. Then an electric current is able to flow through the plasma, making the lightning.
Plasma is the most common state of matter in the universe. Both stars and the interstellar medium are mostly made of plasma.
Phases of matter can be changed by a number of things. The most common ones are temperature and pressure. Substances usually become a gas at warm temperatures and/or low pressures, become a solid at cool temperatures, and become a plasma at extremely hot temperatures. Substances often become liquid in between solid and gas, but when the pressure is very low (such as the vacuum of outer space) many substances skip the liquid phase, going directly from solid to gas or vice versa. Scientists have created graphs called phase change diagrams to show the relationship between pressure, temperature, and phase of many substances.
When a solid becomes a liquid, it is called melting. When a liquid becomes a solid, it is called freezing. When a solid becomes a gas, it is called sublimation. When a gas becomes a solid, it is called desublimation. When a liquid becomes a gas, it is called evaporation. When a gas becomes a liquid, it is called condensation.
The freezing point and the melting point are said to be the same, because any increase in temperature from that point will cause the substance to melt, while any drop in temperature will cause it to freeze. Likewise, the vaporization and condensation points (or the sublimation and desublimation points) always match. In most substances, as the pressure increases, the vaporization/condensation point also increases, or vice versa. For example, the boiling point of water decreases as you go up a mountain, because the air pressure is lower. The relationship for freezing and melting can go in different directions depending on the substance.
Many other states of matter can exist under special conditions, including strange matter, supersolids, and possibly string-net liquids. Scientist work on experiments at very high or very low temperatures to learn more about phases of matter.
Bose-Einstein condensates and fermionic condensates are phases of matter that apply to particles called bosons and fermions, respectively. (More than one boson can exist in the same spot at the same time. Only one fermion can exist in the same spot at the same time). Bose-Einstein condensates and fermionic condensates occur at incredibly low temperatures. All of the particles in these condensates begin to act like one big quantum state, so they have almost no friction or electrical resistance.
When the core of a star runs out of light elements (like hydrogen or helium) to sustain fusion, the core will collapse into a very dense state called "degenerate matter". Everything is packed very tightly and can barely move. If the star isn't too heavy, it becomes a white dwarf. In a heavier star, the pressure is so intense that even the protons and electrons are crushed, and it becomes a neutron star.
The protons and neutrons that make up atoms are made of even smaller things called quarks (which are "glued" together by things called "gluons"). At incredibly high temperatures over 2 trillion Kelvin, quarks and gluons turn into another state of matter. Humans can make a little bit of quark-gluon plasma in the Large Hadron Collider at CERN, but it doesn't last long before cooling down.
When a substance has enough temperature and pressure at the same time, called the critical point, you can't tell the difference between very dense gas and very energetic liquid. This is a supercritical fluid, and it behaves like both liquid and gas.
Superfluids, on the other hand, only happen at very low temperatures, and only for a few special substances like liquid helium. Superfluids can do things that regular liquids cannot, like flowing up the side of a bowl and getting out.
Perimeter
In geometry, perimeter is the distance around a flat object. For example, all four sides of a square rhombus have the same length, so a rhombus with side length 2 inches would have a perimeter of 8 inches (2+2+2+2=8).
For a polygon, the perimeter is simply the sum of the length of all of its sides. For a rectangle, the perimeter is twice the sum of its length and width (formula_1). Perimeter can also be calculated for other planar figures, such as circle, sector and ellipse.
Real-life objects have perimeters as well. A football field, including the end zones, is 360 feet long and 160 feet wide. This means that the perimeter of the field is 360+160+360+160=1040 feet.
The perimeter of a circle is usually called the circumference. It may be calculated by multiplying the diameter times "Pi". Pi is a constant which is approximately equal to 3.14159; however, the places to the right of the decimal are endless. The number of places used depends on the accuracy required for the result.
Nation
A nation is a group of people who share the same culture, history, language or ethnicity. It can also be described as people living in the same country and government.
The word "nation" comes from a Latin language word meaning "birth" or "place of birth." The adjective is national.
Some nations are people with a particular belief, such as the Vatican City, or ethnic group, such as Armenia. Others share an idea, such as Democracy in the United States or Communism in China.
Some nations are controlled by a small minority who have all the power, such as Saudi Arabia, who hold the nation together with the use of this power.
Some of these may also be combined. The highest lawful authority of most nations is a constitution, which is a document which states clearly what kinds of power the rulers have and how new laws must be made. Many others are ruled by a single person who holds an "office" (position), such as a King or Pope, or from a long legal tradition without an official Constitution, such as the United Kingdom.
Matrix
Matrix can mean:
Metal
Some chemical elements are called metals. They are the majority of elements in the periodic table. These elements usually have the following properties:
Most metals are solid at room temperature, but this does not have to be the case. Mercury is liquid. Alloys are mixtures, where at least one part of the mixture is a metal. Examples of metals are aluminium, copper, iron, tin, gold, lead, silver, titanium, uranium, and zinc. Well-known alloys include bronze and steel.
The study of metals is called metallurgy.
Most metals are hard, shiny, they feel heavy and they melt only when they are heated at very high temperatures . Lumps of metal will make a bell-like sound when they are hit with something heavy (they are sonorous).
Heat and electricity can easily pass through a metal (it is conductive). A lump of metal can be beaten into a thin sheet (it is malleable) or can be pulled into thin wires (it is ductile). Metal is hard to pull apart (it has a high tensile strength) or smash (it has a high compressive strength). If you push on a long, thin piece of metal, it will bend, not break (it is elastic). Except for cesium, copper, and gold, metals have a neutral, silvery color.