Coasts 1.5 / 5 based on 2 ratings ? GeographyCoastal zonesGCSEOCR Created by: Griffri Walker-SladeCreated on: 03-06-13 14:25 What is the main disadvantage of a sea wall? It is expensive to build and maintain. 1 of 6 What is the diagonal movement of material across the beach? Longshore drift 2 of 6 What sea defence would you use to stop longshore drift? Groynes 3 of 6 What is hydraulic action? It is when air is forced into weaknesses which leaves the weakness prone to other types of erosion 4 of 6 What is one of the fastest eroding coastlines in europe? Holderness coast 5 of 6 What is fetch? The area of land which wind blows over to create waves 6 of 6
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