firstly waves approach the beach at an angle similar to that of the wind. the swash carries material up the beach following the angle of the waves. the process is a repetitive zig zag pattern. overtime material that was carried gets deposited.
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fetch
the distance waves have travelled eg. across the Atlantic or across the north sea.
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constructive waves
low waves that surge up the beach, gentle beach, crests are apart
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destructive waves
crests are close together, strong backwash
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mechanical weathering
the disintegeration of rocks
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chemical weathering
caused by chemical changes. rainwater which is slightly acidic
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biological weathering
due to actions of flora and fauna, plant roots grow in cracks in the rocks.
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mass movement
typical on chalk cliff. rockfall occurs when chemical weathering appears. mass movement can lead to cliff collapse.
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