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23 Cards in this Set
- Front
- Back
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Weathering
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the process by which natural forces break down rocks
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Mechanical Weathering
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the breaking up of rocks by physical forces
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Exfoliation
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a process in which layers or sheets of rock gradually break off
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Abrasion
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the process of wearing down by friction
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Chemical Weathering
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the breakdown of rocks by chemical reactions that change the rocks' makeup or composition
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Humus
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decayed organic matter in soil
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Soil Horizon
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a layer of soil with properties that differ from the layers above or below it
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Soil Profile
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soil horizons in a specific location
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Desertification
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the expansion of desert conditions in area where the natural plant cover has been destroyed
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Erosion
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the process in which weathered particles are picked up and moved from one place to another
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Deposition
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the part in erosion in which sediment is placed in a new location
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Mass Wasting
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the downhill movements of masses of rock and soil
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Drainage Basin
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the area of land in which water drains into
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Alluvial Plain
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a fan-shaped deposit of sediment at the base of a mountain
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Delta
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an area of land formed by buildup of sediment at the end of a river
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Sinkhole
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a basin that forms when the roof of a cave becomes so thin that it suddenly falls in
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Longshore Drift
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the zigzag movement of sand along a beach
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Longshore Current
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movement of water along a shore as waves strike the shore at an angle
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Sandbar
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a ridge of sand built up by the action of waves and currents
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Barrier Island
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a long, narrow island that develops parallel to the coast
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Dune
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a mound of sand built up by wind
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Loess
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Deposits of fine wind-blown sediments
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Porosity
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having small spaces or holes through which wind or water can blow through
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