L6 Sand Dunes

Which stage involves the formation of a hollow area in the cliff?

• Formation of a stack

• Formation of an arch

• Formation of a cave

• Formation of a beach

What is a groyne used for?

• To protect cliffs from erosion

• To prevent longshore drift

• To create waves for surfing

• To build sand dunes

Describe the characteristics of a spit

• To protect the coast from erosion

• An extension of the coastline into the sea

• To create sand dunes

• To attract marine life

What kind of obstacle is needed for a sand dune to form?

• Driftwood

• A metal fence

• A concrete wall

• A glass barrier

What role does driftwood play in sand dune formation?

• Acts as an obstacle for the dune to form against

• Provides nutrients for plant growth

• Attracts wildlife to the area

• Increases the moisture content of the sand

What role do onshore winds play in the formation of sand dunes?

• They cool the beach

• They move sediment to the back of the beach

• They create waves

• They prevent erosion

What is the sequence of dune development from the sea to the mature dune?

• Mature Dune, Grey Dune, Yellow Dune, Fore Dune, Embryo Dune

• Embryo Dune, Fore Dune, Yellow Dune, Grey Dune, Mature Dune

• Fore Dune, Embryo Dune, Yellow Dune, Grey Dune, Mature Dune

• Yellow Dune, Embryo Dune, Fore Dune, Grey Dune, Mature Dune

What color are the dunes closest to the beach?

• Grey

• Yellow

• White

• Brown