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What is Green house effect and its contribution towards the surface temperature of earth ? |
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Answer» Green house effect : Temperature of the earth increases due to the radiation emitted by the earth is trapped by atmospheric gases like CO2, CH4, N2, Chlorofluoro carbons etc is called green house effect. (i) Radiation from the sun enters the atmosphere and heat the objects on the earth. These heated objects emit infrared rays. (ii) These rays are reflected back to Earth's surface and trapped in the Earth's atmosphere. Due to this temperature of the earth increases. (iii) The layers of carbon dioxide (CO2) and low lying clouds prevent infrared rays to escape Earth's atmosphere. (iv) Since day–by–day the amount of carbondioxide in the atmosphere increases, more infrared rays are entrapped in the atmosphere. (v) Hence the temperature of the Earth's surface increases day by day. |
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