Subaerial Weathering 0.0 / 5 ? GeographyCoastal environmentsASWJEC Created by: zoedavies_99Created on: 15-05-17 15:15 Physical/mechanical Weathering Weathering breaks off rock fragments of varying size which fall to the foot of the cliff, there they can protect the cliff from erosion. 1 of 5 Different physical weathering processes Freeze-thaw - Repeated freezing and thawing of water causes a type of crystal growth. 2 of 5 Chemical Weathering Decomposes rock by altering the minerals in the rock. 3 of 5 Diffenent chemical weathering processes - Hydration - Minerals absorb water, weakening their crystal structure. Rock is then more susceptible to other weathering processes. 4 of 5 Biotic Weathering Caused by plant roots and burrowing animals, opens up the cliff face to other destructive processes. 5 of 5
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