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Shingle beach faces commonly stand at slopes of about

  • A.vertical
  • B.1 in 5 to 1 in 10
  • C.1 in 100 to 1 in 200
  • D.1 in 1000 or flatter

Answer: B

Coarse material drains quickly and supports a much steeper face than sand. Fine sand beaches by contrast are typically nearer one in fifty to one in a hundred. Grain size is the strongest single control on beach slope.

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