Weathering can be considered as the breakdown of rock to form sediment. It is also regarded as the physical breakdown (disintegration) and chemical alteration (decomposition) of rocks and minerals at or near the earth’s surface. The three main types of weathering are physical weathering, mechanical weathering, and chemical weathering. Mechanical weathering is the physical breakdown of rocks and minerals into smaller pieces that retain the chemical composition of the parent material. (Body from which …showed first 75 words of 953 total…

…showed last 75 words of 953 total…or a river can travel as: -Bed load -Suspended load -Dissolved load (salt, chemicals.) Work cited: 1) Wicander, R. & Monroe, J.S. 2002. Essentials of Geology. Wadsworth. 2) http://www.gpc.peachnet.edu/~pgore/geology/geo101/weather.htm 3) De Blij, Hj, Muller, Peter O.1996. Physical Geography of the global environment. New York: John Wiley and Sons. 4) Andrew Mc Leish.2001. Geological Science. Nelson Thornes ltd. 5) Kimberley, Michael M, Susan J.1992. The dynamic earth. New York: John Wiley and Sons. `