coastal processes and features
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Hydraulic action | force and power of the water wears away the coastline
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| Abrasion | during storms loose rocks are thrown up by the waves against the coast
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| compressed air | as waves crash against cliffs air is trapped in cracks and compressed ,as water retreats escaping air explodes shattering rock
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| solution | soft rock dissolved by sea water eg limestone
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| features of sea erosion | bays and headlands ,sea cliffs, arch,stack,caveand blow hole
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| formation of a bay | areas of soft rock on the coastline are eroded faster than hard rock beside it forming a bay
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| headland | as soft rock is eroded the hard rock around it juts out to sea forms headlands
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| sea cliff | a steep sided high rock face on the coast
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| sea cave | long hollow tunnel in a cliff
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| sea arch | arch shaped opening in a headland example Old head of Kinsale Co Cork
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| sea stack | chunk of rock in the sea surrounded by water
Cliffs of Moher co Clare
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| blow hole | a funnel shaped hole that joins a cave
to the surface near a cliff edge
eg Bridges of Ross Co Clare
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| longshore drift | movement of material along the shore
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| beach | an area of boulders sand and shingle which is found between high and low tide
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| sand spit | a ridge of sand and shingle which projects out to sea or across a bay eg Portmarnock Co Dublin
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| sand bar | a ridge of sand and shingle which projects out to sea or across a bay and cuts off the bay eg. Roonagh Lough Co Mayo
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| tombolo | a ridge of sand and shingle which projects out to sea or across a bay and joins an island to the mainland eg. Howth Co Dublin
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| backwash | the return of the water down the beach
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| advantages of the sea | recreation,fish catch,natural gas deposits, oil,
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| disadvantages of the sea | erosion of land ,housing and cliffs,flooding, sand clogging harbours
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| ways of protecting the coast | groynes,dykes and sea walls
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Created by:
buckley19
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