Saturday, February 23, 2008
Global Warming and The Greenhouse Effect
Do you know how this works? Do you really care? The greenhouse effect is a natural process of the Earth. Heat travels from the Sun as visible light and infrared rays, which are long-wave energy. Ultraviolet rays, which burn and tan your skin, are of short wave length. Short wavelength rays pass through the atmosphere and warm the Earth's surface. Long wave infrared is radiated back out into space at night, but certain greenhouse gases, such as carbon dioxide, methane and water, trap some of the heat by absorbing it. This process helps to keep the Earth warm enough to support human life. It is a natural process.
Global warming is an unnatural process that is caused by human activity putting too much carbon dioxide and methane into the atmosphere, thus absorbing more heat and causing unnatural heating. (Education Presentation)