Coastal Erosion

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  • Coastal Erosion
    • Hydraulic Action
      • Air in cracks puts pressure on rock and causes pieces of rock to break off
    • Corrasion
      • Sand and pebbles carried in waves thrown against cliff face
    • Corrosion
      • Chemicals in sea water dissolve certain rock types, eg chalk
    • Attrition
      • breaking up of rocks and pebbles in the waves.
      • wave movement means rocks are continually knocked, produces smooth edges eventually sand.
    • Mass Movement
      • Material moves down a slope, pulled down by gravity
    • Weathering
      • way that rocks are broken down in situ
    • Transport
      • putting down of sand and pebbles by the sea


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