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WA3 - Assignment Example

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Also, there has been a misunderstanding on whether greenhouse gases are the main cause of global warming or the risen increase in temperature. Claims by the scientist that greenhouse gases…
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Greenhouse Gases There is a bit of confusion in the general public about the outcome of greenhouse gases. Also, there hasbeen a misunderstanding on whether greenhouse gases are the main cause of global warming or the risen increase in temperature. Claims by the scientist that greenhouse gases are the cause of global warming has been refuted by the public or other scientists. Some individuals see the word greenhouse as the bad word. But, the fact is that without the greenhouse effect, the earth would not have been inhabitable because it would have had lower temperatures (Letcher 1).
Halmann and Steinberg (1) explain that Earth has blanket like atmospheres that prevent heat from the solar radiation directed from the sun to the earth. The authors point out that the atmosphere maintains the temperature of the earth at 15 degrees Celsius. However, without atmosphere, the temperatures would have been lower, approximately -19 degrees Celsius. This fact can be explained clearly from the lower surface temperatures of the moon. The moon has no atmosphere making it inhabitable, unlike the earth.
The earth surface is warm due to blanket like atmosphere; the atmosphere is created by gases in the atmosphere of the earth. The gases are referred to as greenhouse gases because their capability to trap heat. Some of the gases behind the earth’s atmosphere are carbon dioxide and water vapor. Other greenhouse gases include nitrous oxide and methane (Greenhouse Effect).
Some of the greenhouse gases mentioned above are carbon dioxide and water vapor. Carbon dioxide CO2 as name suggest has a carbon atom and two-oxygen atoms. Two atoms of oxygen are bonded to CO2. As a molecule, all the three atoms are bonded making it easy to absorb energy from the sun inform of infrared radiation. The infrared radiation is absorbed by the molecule and so the molecule vibrates. Vibrating molecule loses the previously absorbed radiation easily which in turn another molecule absorbs it. This goes in the cycle and in the end the infrared radiation is not lost, therefore, the surface of the earth is kept warm. Nitrous oxide, methane and water vapor does the same as carbon dioxide. Their molecules absorb and lose heat because they are loosely bounded to compound atoms (Greenhouse Effect).
Greenhouse gases previously in 19th century were seen as natural functioning gases with positive effects. However, in mid 20th-century people became more concern with greenhouse gases due change of climate and increasing temperatures. Some greenhouse gases such as carbon dioxide, water vapor and methane are natural. There are other gases that are influenced by man, some of them are chlorofluorocarbons and hydrocarbons. Combination of both natural and man-mad greenhouse gases are the cause of climate change and rising temperatures (National Climate Data Centre).
Carbon dioxide occurs naturally, however, with increasing use of fossil fuels such as oil and coal, carbon dioxide increases in the atmospheres causing more effect on greenhouse. Additionally, greenhouse effect caused by carbon dioxide increases global temperatures. High temperatures lead to increase of water vapor. Water vapor as mentioned earlier is part of greenhouse gases (Halmann and Steinberg 2).
Works Cited
“National Climate Data Centre”. Greenhouse Gases. n.d. Web. 30 July 2014.
Halmann, M. Martin and Steinberg, Meyer. Greenhouse Gas Carbon Dioxide Mitigation: Science and Technology. Florida: CRC Press, 1998. Print.
Letcher, Trevor. Climate Change: Observed impacts on Planet Earth. Amsterdam: Elsevier, 2009. Print.
The Greenhouse Effect. n.d. Web. 30 July 2014. Read More
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