sun - The greatest star in the solar system, infrared radiation - The heat on our skin that we feel from the sun., absorbed - To take in or soak up the sun's energy rays, methane - A colourless, odourless flammable gas which is the main constituent of natural gas, hydrogen - The lightest chemical element; its symbol is H. It is usually found as a gas and has several uses as a fuel., nitrous oxide - A colourless gas with a sweetish odour, It is used as a mild anesthetic, often called laughing gas. It occurs naturally in the atmosphere., Greenhouse Effect - The retention of part of the Sun's energy in the Earth's atmosphere in the form of heat as a result of the presence of greenhouse gases, Greenhouse gases - a gas that absorbs infrared radiation (IR) and radiates heat in all directions. It can be hydrogen, methane or nitrous oxide., molecules - A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. , environment - The conditions that surround someone or something , atmosphere - The blanket of gas surrounding the surface of the earth. The atmosphere of the Earth is roughly 80% nitrogen and 20% oxygen, with traces of other gases., reflected - When the sun's rays hit the Earth a lot of the heat bounces back into space and is not absorbed., chlorofluorocarbon - Gases used in refrigerants and aerosol propellants. They are harmful to the ozone layer in the earth's atmosphere owing to the release of chlorine atoms on exposure to ultraviolet radiation., emitted - To produce, discharge or give out., planet - A body that orbits the Sun, is massive enough for its own gravity to make it round, and has "cleared its neighbourhood" of smaller objects around its orbit., Global warming - The increase of Earth's surface temperature due to effect of greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth.,

Match up1 The Greenhouse Effect

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