Explain three factors that determine the rate of coastal erosion.
Answer:
- Duration of the exposure of the coast to wave erosion. The longer the exposure to the coastal waves, the higher the rate of erosion.
- Degree of exposure of the coast to wave erosion. The exposed coasts are
eroded more than the sheltered coasts that are sheltered hence reducing the rate of erosion.
- Nature or supply of material. Heavy materials or boulders have higher erosive power than fine materials.
- Nature of structure of the coastal rock. A coast made up of soft rocks
wears away easily when subjected to sea or when rocks are well joined or have fractures or are easily eroded.
- Nature or strength of the destructive waves. Strong waves will cause greater erosion by hydraulic action and erosion process.
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