Coastal Landscapes in the UK Flashcards

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Describe carbonation weathering.
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When rainwater hits rock it decomposes it or eats it away. This is known as carbonation. This occurs when slightly acidic (carbonic) rain or seawater comes into contact with sedimentary rock, such as limestone or chalk, it causes it to dissolve. A chemical reaction occurs between the acidic water and the calcium carbonate and forms calcium bicarbonate. This is soluble and is carried away in solution. Carbonation weathering occurs in warm, wet conditions.

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Describe carbonation weathering.
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?
Identify 4 types of mass movement.
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Rock fall, landslide, mudslide and slumping.

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Identify 4 types of mass movement.
This is when areas of the coast are allowed to erode. This is usually in areas where the land is of low value.
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Managed retreat (coastal realignment)

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This is when areas of the coast are allowed to erode. This is usually in areas where the land is of low value.
What is the fetch of a wave?
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The distance a wave has travelled.

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What is the fetch of a wave?




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