Coastal processes and landforms
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Created by:
rgamesby on August 10, 2009
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A set to help you revise coastal processes and landforms. From Http://www.coolgeography.co.uk
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26 terms
Terms | Definitions |
|---|---|
 Fetch | the stretch of open water over which the wind blows |
| Constructive wave | a wave where the swash is stronger than the backwash |
| Destructive wave | a wave where the backwash is greater than the swash |
| Wave crest | the top of a wave |
| Beach | a deposit of sand or shingle |
| Waves break | because of friction from the sea bed |
| Spring tides | are the strongest and highest |
| Weathering | is the break down of rocks insitu |
| Erosion | is the break down and movement of rock material |
| Mass movement | the downhill movement of rock and soil because of gravity |
| Rockfall | fragments of rock break away from the cliff due to weathering |
| Landslide | blocks of rock slide downhill |
| Rotational slip | slump of saturated soil and weak rock along a curved surface |
| Hydraulic action | the power of waves compressing air in cracks |
| Corrasion | fragments of rock are hurled against cliff faces by waves and used as abrasive tools |
| Attrition | rock fragments in the sea water grind against one another and become smaller |
| Longshore drift | The zig zag motion of sediment along the coastline |
| Saltation | the hopping motion of sediment along the sea bed |
| Traction | where pebbles are rolled along the sea bed |
| Swash | The movement of waves and sediment UP the beach |
| Backwash | The movement of waves and sediment DOWN the beach |
| Headland | A promontory of land jutting out to sea |
| Bay | a broad coastal inlet often with a beach |
| Stack | a large vertical column of rock detached from a cliff face |
| Wave cut platform | a flat area of rock in front of a cliff |
| Spit | a long narrow finger of sediment formed by coastal deposition |
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