Crowded Coasts Keywords

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Abrasion
The grinding away of bedrock by fragments of rock which may be incorporated in ice. Also known as corrosion.
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Anoxic
Without oxygen.
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Boulder Clay
The unsorted sediment deposited directly below a glacier, which has a range of particle sizes from fine clay to rock fragments and boulders.
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Coastal squeeze
a) Where coastal sediment is prevented from expanding. b) An environmental situation where the coastal margin is squeezed between the fixed landward boundary and the rising sea level.
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Coastalisation
The movement of people to coastal areas.
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Corrosion
The breaking down of something slowly by chemical action.
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Cost-benefit analysis
A technique where projected public schemes are evaluated in terms of social outcomes as well as in terms of profit and loss.
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Eustatic change
A worldwide change of sea level which may be caused by the growth and decay of ice sheet.
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Eutrophication
The process by which ecosystems become more fertile environments as detergents, sewage and artificial fertilisers flow in.
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Fetch
The distance that a sea wave has travelled formats beginning to the coast where it breaks.
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Freeze-thaw
The weathering of rocks which occurs when water which has penetrated joints and cracks freezes and expands.
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Hydraulic action
The force of the water within a stream or river.
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Isostatic changes
The rise or fall of the Earth's continental crust in response to the melting or accumulation of glacial ice.
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Longshore drift
The movement of sand and shingle along the coast.
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Relief
The shape of the Earth's surface. High relief is steep land and low relief is more sloped.
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Salt marsh
The mud flats in estuaries and sheltered bays on which vegetation has grown.
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Slumping
A mass movement where rock and soil move downwards along a concave face.
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Swell
A long series of ocean waves, generally produced by wind, and lasting after the wind has ceased.
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Topography
The physical features of an area of land, especially the position of its rivers and mountains.
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Other cards in this set

Card 2

Front

Without oxygen.

Back

Anoxic

Card 3

Front

The unsorted sediment deposited directly below a glacier, which has a range of particle sizes from fine clay to rock fragments and boulders.

Back

Preview of the back of card 3

Card 4

Front

a) Where coastal sediment is prevented from expanding. b) An environmental situation where the coastal margin is squeezed between the fixed landward boundary and the rising sea level.

Back

Preview of the back of card 4

Card 5

Front

The movement of people to coastal areas.

Back

Preview of the back of card 5
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