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WATER IT MOVES THE WORLD Water does move the world but not always in a noticeable or dramatic way Erosion is a key element in making the world possible to live in Erosion forms the valleys literally dissolves solid rock moves 3 ton boulders and builds bridges Water is the most abundant and therefore most powerful resource on the planet Although water creates landmarks the size of the Grand Canyon man cannot see the process only the result RAIN EROSION According to Rain Erosion graphicslcsmitedu rain erosion is a result of kinetic energy developed by water as it flows over the surface of the material Material particles are detached from the mass and transported to another location Although one raindrop has little effect on the earth the accumulated effect of rainfall over long periods of time can accomplish large amounts of erosion Erosion begins when rainfall hits materials traveling at a high velocity and forces the materials to crumble into small particles This continues until the rain creates small grooves Continuing rain causes these grooves to overflow with a combination of water and particles This is called run-off Continuous run-off breaks up the surface into smaller and smaller particles Accumulating run-off on the surfaces moves down the slopes This causes sheet erosion This down slope run-off detaches these particles and moves them with the water These moving particles strike against other particles on the surface which sets them into motion this process is called abrasion The velocity and turbulence of the run-off affect the degree of the sheet erosion also some materials are less abrasive than others which also affects the degree of sheet erosion Matter can be transported in three different ways heavier particles will roll along the surface--these are called rolling matter Smaller particles will bounce along at a faster rate than rolling matter----these are called bouncing matter The smallest particles are completely suspended by the water and travel the fastest-----these are called
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