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15 Cards in this Set
- Front
- Back
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Marine processes |
Processes that operate upon a coastline that are connected with the sea, such as waves tides and longshore drift |
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Sub-aerial processes |
Processes that operate on the land but affect the shape of the coastline such as weathering, mass movement, and runoff |
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Hydraulic action |
Impact on rocks by sheer force of water |
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Wave quarrying |
Breaking wave traps air as it hits a cliff face, the force of water compresses this air into any gap in the rock face, creating enormous pressure within the fissure or joint. As water pulls back the pressure is released |
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Abrasion (corrasion) |
Material picked up by the sea wears away rock faces as it is hurled at the cliff face |
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Attrition |
The rocks in the sea are slowly warn down as they carry out abrasion |
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Solution (corrosion) |
Dissolving of calcium based rocks |
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Where do the steepest cliffs form? |
Where the rock stratas are horizontal or dipping gently inward |
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Where do gentle slopes form? |
Rocks that dip toward the coast |
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Fetch |
How far the wave has travelled, determined energy |
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Sea depth |
Steeply shelving seabed at the coast will create higher and steeper waves |
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Coastal configuration |
Headland attract wave energy through refraction |
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Geology |
Tough and resistant rocks such as granite erodes at very slow rates compared to weaker clays and shales |
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Rock type |
Physical strength and chemistry, determined it's resistance to erosion and permeability |
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Transportation |
Mobement of material in the sea and along the coast by waves and tidal energy |
