Sand Dunes

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1. Which of these descriptions best describes a dune slack

  • A depression between dune ridges
  • A large hole that appears in the dune
  • A species of plant that grows on fixed grey dunes
  • an obstacle that limits sand movement
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2. What is the cause of the coloring of yellow sand dunes?

  • Lack of plants
  • Lack of humus
  • Lack of rain
  • Lack of sea water

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

  • embryo dune, yellow dune, fixed grey dune
  • fixed grey dune, embryo dune, yellow dune
  • yellow dune, embryo dune, fixed grey dune
  • embryo dune, fixed grey dune, yellow dine

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

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

5. What are blowouts evidence for?

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


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