Rivers + Coasts Revision

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  • Created by: Théa
  • Created on: 11-06-13 18:45
What is Hydraulic Action at Coasts?
When waves crash against rocks and compress the air in the cracks, putting pressure on the rocks
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What is corrosion at coasts?
When slat and other things dissolved in the sea water corrode the rocks, making them weaker
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What are Destructive waves like?
They occur when there is a steep gradient. They are large in height / have lots of energy / have a weak swash and strong backwash
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What are Constructive waves like?
They occur at a shallow gradient. They are small in height / have less energy / have a strong swash and weak backwash
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What is Longshore Drift?
When waves coming into the beach from an angle, due to the direction of the prevailing wind, move material along a beach and coastline
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What is a bar?
A beach/strip of land which has been formed by deposition and joins two headlands together, with a lagoon behind it
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What is a spit?
Spits are bands of sand or deposited materials which forms at a sharp bend on a coastline
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How are Bars and Spits formed?
By longshore drift
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What is a tombolo?
A bar that connects the shore to an island
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Other cards in this set

Card 2

Front

What is corrosion at coasts?

Back

When slat and other things dissolved in the sea water corrode the rocks, making them weaker

Card 3

Front

What are Destructive waves like?

Back

Preview of the front of card 3

Card 4

Front

What are Constructive waves like?

Back

Preview of the front of card 4

Card 5

Front

What is Longshore Drift?

Back

Preview of the front of card 5
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