Transcription of Universal Soil Erosion Equation - ASU
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Universal Soil Erosion Equation - ASU
Universal soil Erosion Equation Author: Laura Swantek Time: 50 minute class period Grade Level: 9-12. Background: soil is created by the weathering of rock and the decomposition of organic materials. Soils are classi- fied according to the amount of silt, sand or clay they contain. If the soil contains all three sediments, it is called loam and is modified by the word for the sediment of the highest concentration ( silty loam: loam with equal amounts of sand and clay but with more silt). soil forms very slowly and is necessary for sustain- ing life on earth. It is what our food is grown in! Erosion of this precious resource has been a problem since people first started farming during the Neolithic and continues to be a problem for farmers today.
Universal Soil Erosion Equation R Factor Very Wet = 90, Moderately Wet = 60, Dry = 30 Jordan was dry during the beginning of the Neolithic, but around 6,000 it changed to a moderately wet cli-
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