Hydraulic action - Lots of sea water crashes against the land. Air and water get trapped and compress in the rock surface cracks. When the sea moves away the air expands explosively wekaing the rocks, enlarging the cracks and breaking pieces off
Corrasion - Very effective and is caused by broken rock fragments battering the cliffs (breaking off pieces of rock
Attrition - Occurs when rock fragments grind each other down into smaller and smoother pebbles / sand this is later desposited as beaches
Corrosion - Involves chemical action of sea on rock. If the rock is limestone it dissolve sin the sea water
Wave pounding - The constant battering of waves erodes cliffs
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