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23 Cards in this Set
- Front
- Back
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any region that receives less than 25 centimeters of rain
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desert
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warm, dry air creates an arid zone
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rain-shadow desert
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stream bed that is dry for most of the year
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wash
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intermittent desert lake
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playa lake
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dry lake bed
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playa
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dry stream bed may fill with water so rapidly
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flash flood
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broad, gently sloping prepositional surface
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bajada
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broad, gently sloping surface eroded into bedrock
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pediment
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large elevated area of fairly flat land
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plateau
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smaller than a plateau is a flat topped mountain shaped like a table
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mesa
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also a flat topped mountain
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butte
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wind erosion
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deflation
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leaving the continuous cover of stones
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desert pavement
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mound or ridge of wind-deposited sand
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dune
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saucer or trough shaped hollow formed by wind erosion
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blowout
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leeward face of a dune
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slip face
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form in rocky deserts with little sand
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barchan dunes
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accumulates in long ridges
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transverse dunes
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similar in shape to a barchan dune
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parabolic dune
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form parallel to the prevailing wind direction
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longitudinal dune
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wind can carry silt for hundreds or even thousands of kilometers and then deposit it as loess
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loess
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growth of the desert caused by human mismanagement
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desertification
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saucer or trough shaped hollow formed by wind erosion
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blowout
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