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Coasts revision (The processes (Erosion ((Hydraulic action. Air becomes…

- - - - Hydraulic action. Air becomes trapped in joints and cracks in a cliff. When a wave hits, the trapped air is compressed which weakens the cliff
      - Abrasion. Sediment in waves grind down cliff surfaces like sandpaper.
      - Attrition. Waves smash rocks and pebbles on the shore into each other, and they break.
      - Solution. Acids contained in sea water will dissolve some types of rock such as chalk or limestone.
  - - - Solution. Minerals and small bits are dissolved in sea water and carried in solution. The material is invisible.
      - Suspension. Small particles are carried in water, eg silts and clays, which makes the water look cloudy.
      - Saltation. Load is bounced along the sea bed. .
      - Traction. Pebbles and larger sediment are rolled along the sea bed.
- - - - Sea walls, groynes...
  - - - Beach nourishment
- - - - It pushes the waves
    - - If it blows in the direction of the wave it will be pushed, otherwise it will be slowed
    - - The more the waves travel, the more energy it has