Types of Erosion GCSE Geography AQA The Coastal Zone

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you can remember this as HACC!

Hydraulic action which is where waves crash into cliffs and trap air in the cracks in the cliffs and cause the air to implode and pressure in the crack to increase and after time this will widen the crack as the pressure is released and this will cause shock waves through the rock and this will widen the crack over time.

Attrition is the process of a wave picking up pebbles and such like and in its elliptical orbit the rocks are bashed together in a kind of washing machine like motion and this will reduce the size of the rock as well and smoothing out…


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