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River Processes (Drainage basins (Watershed - the area of high land…
River Processes
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Erosion
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Attrition - when the load knocks against each other, reducing and weakening the size
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Transportation
Traction - moves the largest material by rolling it along the bed as it's too heavy to lose contact (common near the source)
Saltation - pebbles are bounced along the river bed, most commonly near the source
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Weathering
Physical
freeze-thaw - when the river goes into cracks in the rock and expands when it freezes, breaking and cracking the rock
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Biological - roots of plants grow into cracks of rocks, splitting the cracks apart
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Mass Movement
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Soil Creep - weathered material moves slowly down the slope due to gravity and collects at the bottom
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Factors of deposition
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at the end of the river's journey, at the river's mouth
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