Man Made Natural Disaster: Acid Rain Essay example

1324 Words Apr 4th, 2008 6 Pages
Ozone depletion, greenhouse effect, and acid rain are man-made disasters. The ozone layer is the part of the Earth's atmosphere which contains relatively high concentrations of ozone (O3). The cause of ozone depletion is the presence of Chlorofluorocarbons (CFCs) and related halocarbons gases in the atmosphere. In the presence of Ultraviolet light, these gases dissociate, releasing chlorine atoms, which then go on to catalyze ozone destruction. The greenhouse effect, on the other hand, is a natural warming process of the earth. When the sun's energy reaches the earth some of it is reflected back to space and the rest is absorbed. The absorbed energy warms the earth's surface which then emits heat energy back toward space as longwave …show more content…
After fumes, which contain specific chemicals, rise to upper atmosphere, where the wind is very strong, the harmful gases are spread worldwide. In a chemical reaction, oxides combine with water vapor causing nitric and sulfuric acids as a catalyst using sun light. In the last stage, the acid chemicals in the air are blown into areas where they are mixed into clouds. Moreover, the acids can fall to Earth in three forms: rain, snow, or dry particles (dry deposition). In areas where the weather is dry, the acid chemicals may become incorporated into dusts or smokes. Acid rain can damage the environment, human health and property. If the air is dry, acid rain can travel large distances to places that don’t even use fossil fuels. When the acid rain cloud comes in contact with damp or moist air, it will then fall, destroying much in its path (Lioy, 2006). Acid deposition is dangerous. In fact, acid deposition can be wet, where acidic gases and particles are removed by rain or other precipitation, and it can be dry, where acidic gases and particles are removed by wind to the Earth's surface in the absence of precipitation ("What is Acid Rain", 2002). The question is, "What will happen after deposition?" The effects after deposition won't be only on non living materials but also on living things (Lioy, 2006). Acid

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