Global Warming Essay

2017 Words9 Pages
The Globe is losing its Cool Global Warming Melissa Moran University of Phoenix Axia collage Professors name SCI 275 October 21, 2009 There are many reasons for the change in the climate. Climate change also known as global warming is the change in the average temperature of the earth surface, and the change in wind and precipitation. Global warming is caused by releasing fossil fuels into the atmosphere. Many factors such as human activity and greenhouse gas emissions contribute to global warming. Global warming also has natural causes though they are often down-played in the media. Global warming can significantly impact the Earth’s overall climate with major consequences. Fossil fuels have been increased in use by humans since the Industrial Revolution began. The result of burning fossil fuels such as oil and coal is the emission of ‘greenhouse gases’. Carbon dioxide, methane, nitrous oxide, water vapor and CFC’s (chlorofluorocarbons) are naturally caused greenhouse gases. Chlorofluorocarbons (CFCs), Perfluorocarbons (PFCs), hexafluoride (SF6) and hydrofluorocarbons (HFCs) sulfur are synthetic. These greenhouse gases act as a blanket that traps in the energy that is reflected from the earth’s surface back up into the atmosphere, which raises the temperature. The greenhouse effect causes a feedback loop with respect to the arctic ice. Usually, ice and snow reflect back most of the energy received from the sun. This is known as albedo. When greenhouse gases trap more energy and warm the earth, the result is the melting of snow and ice. Under the ice and snow is darker material which absorbs more energy and causes more melting. By understanding complex systems such as this, scientists can try to answer more questions regarding climate change and human influences on remote

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