Task 2 blog project

Global Warming is a term used to describe the changing in the weather in the last few years. There are ten special climate areas on the earth: tropical, subtropical, arid, semi-arid, Mediterranean, temperate, northern temperate, mountain, polar, and coastal. There are two major reasons for a region’s climate: the average annual temperature and the amount of precipitation received in the zone. There are many factors changing the earth’s climate, for example, the amount of solar energy, the shape and orientation of the Earth’s orbit around the sun, and the composition of the Earth’s atmosphere. The most important thing that is behind climate changes on Earth is the sun. About 30 percent of the solar radiation reaching the atmosphere is reflected back into space; another 20 percent is absorbed by the atmosphere. In fact, the climate differs from one place to other in the earth because of some another facts; for example, the Earth follows an oval-shaped path and the second fact is the Earth’s axis is tilted at an angle of 23.5 degrees in relation to the plane of the sun. Sunlight consists of radiation with short wavelengths; it’s re-radiated to the atmosphere in a form that consists of a longer wavelength.


The changes in global climate have changed the course of the Earth’s history. The human burn a very large amount of fossil fuels to operate factories, heat homes and offices and to power vehicles, and these activities contribute to the concentration of that CO2 gas in the atmosphere. Many scientists now believe that this change means that the higher concentration of carbon dioxide will inevitably lead to a greater retention of heat in the atmosphere. This phenomenon has been called global warming.


Sources:

http://0-find.galegroup.com.library.hct.ac.ae/srcx/retrieve.do?subjectParam=Locale%2528en%252C%252C%2529%253AFQE%253D%2528su%252CNone%252C14%2529Global%2Bwarming%2524&contentSet=GSRC&sort=Relevance&tabID=T001&sgCurrentPosition=0&subjectAction=DISPLAY_SUBJECTS&prodId=SRC-1&searchId=R1&currentPosition=7&userGroupName=971hctnet&resultListType=RESULT_LIST&sgHitCountType=None&qrySerId=Locale%28en%2C%2C%29%3AFQE%3D%28SU%2CNone%2C14%29Global+warming%24&inPS=true&searchType=BasicSearchForm&displaySubject=&docId=EJ2644041045&docType=GSRC