Coasts

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  • Created by: HLeiper
  • Created on: 28-03-14 22:07
Mechanical weathering
Breakdown of rock without changing its chemical composition
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Chemical weathering
The breakdown of rock by changing its chemical composition
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Mass movement
Shifting of rocks and his material down a slope. Happens when the force of gravity acting on the slight is greater than the force supporting it
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Hydraulic power
Waves crash against the rock and compress air in the crack. This puts pressure on the rock. Repeated compression widens the cracks and makes bits of rock break off
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Abrasion
Eroded particles in the water scrape and rub against rock removing small pieces
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Attrition
Eroded particles in the water smash into each other and break into smaller fragments. Their edges also get rounded off as they rub together.
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Solution
Weak carbonic acid in seawater dissolves rock the chalk and limestone
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Constructive wave
A powerful wave with a strong swash that surges up the beach
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Destructive wave
A wave formed by a local storm that crashes down onto the beach and have a powerful backwash
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Slide
Material shifts in a straight line
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Slump
Material shifts with a rotation
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Traction
Large particles like boulders are pushed along the seabed by force of the water
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Saltation
Pebble size particles are bounced along the seabed by the force of the water
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Suspension
Small particles like silt and clay are carried along in the water
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Other cards in this set

Card 2

Front

Chemical weathering

Back

The breakdown of rock by changing its chemical composition

Card 3

Front

Mass movement

Back

Preview of the front of card 3

Card 4

Front

Hydraulic power

Back

Preview of the front of card 4

Card 5

Front

Abrasion

Back

Preview of the front of card 5
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