Sand Dunes

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1. What is the correct order a sand dune is formed in (from coast in inland)

  • fixed grey dune, embryo dune, yellow dune
  • embryo dune, yellow dune, fixed grey dune
  • embryo dune, fixed grey dune, yellow dine
  • yellow dune, embryo dune, fixed grey dune
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2. What height can a yellow dune reach up to?

  • 10 metres
  • 5 metres
  • 3 metres
  • 7.5 metres

3. A sand dune is only able to form when which two things are present?

  • obstacles to limit sand movement, longshore drift
  • strong on-shore winds, obstacles to limit sand movement
  • precipitation, soft rocks
  • expanses of dry sand, biological weathering

4. What are blowouts evidence for?

  • longshore drift
  • over use by animals
  • over use by humans
  • biological weathering

5. What species of plant are found in grey fixed dunes?

  • sea holly, red fescue
  • thistle, bramble, bracken
  • water mint, rushes and weeping willow
  • marram grass

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