Adiabatic cooling occurs as rising air expands. The air expands because the pressure on it is decreasing. | ||||||
Most surface water runoff occurs if the soil is bare, precipitation rate exceeds permeability rate, soil is saturated and slope of land is too great. | ||||||
Notice that a wooded area's water runoff rate is about 0.12% while bare soil is 49% (a higher value means a greater amount of runoff) |
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Chemical weathering dominates in warm, humid climates. | ||||||
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Physical Weathering dominates in cold, humid climates (good for frost wedging). | ||||||
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Gravity is the force that drives erosion. | ||||||
All types of mass wasting above are a direct result of gravity. |
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Streams are currently the number one agent of erosion in New York State. | ||||||
Stream velocity depends on slope (gradient) and discharge. | ||||||
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Velocity is greatest on the out side of meander bend. | ||||||
Heavy, round and dense particle settle out first. | ||||||
Above is a large glass cylinder containing a mixture of sediments of the same density and water. |
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Water sorts sediments by size vertically, with the biggest sentiments on the bottom only when sediments settle in still water. | ||||||
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