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Mass Wasting

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Cliffs are also susceptible to mass movements. These can be slow or

sudden.

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Waves attack the cliffs at the base, undercutting

them.

Takes place on soft rock.Rain saturates the top of

the cliff.

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Rock slumps into the sea.

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Takes place on harder rock, built up in layers. The top layer may become

saturated.

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It slides over the layer beneath- rapidly moving

downhill.

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Very fine loose material becomes saturated with

water and just flows down a slope.

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Freeze-thaw weathering will shatter rocks from

cliffs- material will gather at the base.

Talus/ Scree slope.

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Soil particles expand due to moisture. They are lifted at a right

angle away from the slope.

As they dry, they shrink, but the force of gravity pulls them

vertically down.

There is a slow downward movement of material over time.

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