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  • Waves
    • The height of a wave depends on:
      • 1. Wind speed.
      • 2. How continuous the wind blows.
      • 3. The extent of open water a wave travels from its origin to where it breaks. This distance is called the fetch.
    • There are two types of waves:
      • Destructive waves
        • Strong backwash scours the beach pulling sand and shingle back into the sea
      • Constructive waves
        • Strong swash pushes materials like sand up the beach.


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