Landforms of Coastal Deposition Flashcards

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Produce an annotated diagram to show the main features of a spit.
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The formation of a spit

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Produce an annotated diagram to show the main features of a spit.
What is a beach?
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The beach is the area between the lowest spring tide level and the point reached by the storm waves in the highest tides.

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What is a beach?
Explain the formation of a bar.
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A bar is created when there is a gap in the coastland with water in it. This could be a bay or a natural hollow in the coastland. The process of longshore drift occurs and this carries material across the front of the bay. Material is pushed up onto beaches at a 45-degree angle when the swash brings it onto the coastline. The backwash takes it back out towards the sea at a right angle to the coast. Through this process, the material is constantly moved along the coastline. The deposited material eventually joins up with the other side of the bay and a strip of deposited material blocks off the water in the bay. The area behind the newly formed bar is known as a lagoon.

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Explain the formation of a bar.
Where do sandy beaches typically form?
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A sandy beach is usually formed in a sheltered bays, where low energy, constructive waves transport material onto the shore.

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Where do sandy beaches typically form?
What is a sand dune?
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A sand dune is a small ridge or hill of sand found at the top of a beach, above the reach of the waves.

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What is a sand dune?




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