Landforms of Coastal Deposition Flashcards

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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?
How are off-shore bars formed?
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Offshore bars form when sediment is transported on and off a beach. Destructive waves remove sediment from the beach and form the offshore bar.

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How are off-shore bars formed?
What is a bar?
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A bar is a ridge of sand or single that joins two headlands either side of a bay.

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What is a bar?
How are sand dunes formed?
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Onshore winds (winds blowing inland from the sea) cause the formation of sand dunes at the back of a beach. Sand is deposited by the wind around an object such as a rock, forming embryo dunes. Over time, vegetation such as marram grass stabilises the sand dunes forming foredunes. As the vegetation around the foredunes decomposes nutrients are released and soil begins to form. A wider range of plants are then able to colonise the dunes.

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How are sand dunes formed?




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