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| vertical difference between trough/ crests |
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| horizontal difference between 2 troughs or 2 crests |
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| time for successive crests/ troughs to pass a given point (frequency) |
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| shifting line of contact b/t water/ land |
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| larger zone of influence for coastal process |
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| main agent in shaping coastal land form |
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| movement of sediment along shore parallel to the beach by beach drift/ longshore drift |
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| movement of sediment along beach just near the shoreline |
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| sediment movement in water just along the shore |
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| occurs when sand arrives at a certain section of beach more rapidly than it is carried away; beach is widened/ built out toward ocean |
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| occurs when sand leaves a section of beach more rapidly than it is brought in |
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| floodcurrents; flow land ward as tide level rises |
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| ebb currents; flow seaward and sea level falls |
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| valleys previously carved by streams; V-shaped, gentler slopes |
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| valleys carved by glaciers; deep U-shaped; steep sided slopes; |
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| removes loose mineral particles from ground; smaller particles are lifted high in the air and carried over long distances |
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| individual crescent shapes heaps of sand with arms/ points of crescent pointing downwind (points and wind are going same direction) |
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| Wave-like dunes with crest perpendicular to wind direction; groups result in sand sea |
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| opposite of barchan dunes; crescent/ arch-shaped dunes with the bow part/ crest in wind-direction |
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| long narrow ridges and are parallel to the prevailing wind direction; cover vast desert areas; dunes can be 300ft tall and 60 miles long |
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| surface deposti of fine wind-trasnported silt; source= glaciers; found in central part of US |
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