hydrolic action is when the sheer fource of the water compresses air into the cracks
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Abrastion
Abrastion is when waves pick up rocks and throw them at the coast line then they wear away the land
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Attrition
Attrition is when rocks smash into each other and break into small pecies
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Solution
Solution is when chemicals in the salt water dissolves the coastline
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how are the crack, cave, arch, sack and stump formed
how are the crack, cave, arch, sack and stump formed
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Cracks
cracks form in headlines at areas of weakness hydrolic action compresses air into the cracks and expands them due to the force of the water
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Cave
the crack bcomes bigger to form a cave abrastion erodes the backwall all the way through abrastion is when rocks are thrown at the backwall by the sea, weariing it away
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Arch
eventually an arch will form the roof of the arch is no longer supported and collapes due to gravity
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Stack
eventually a free standing pillar is left behind known as a stack.
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Stump
eventually the stack erodes down to a stump due to solution. solution is when chemicals in the salt water dissolves the rocks
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Depostion
Depostion
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Swash
the sea carries rocks towards te coast at an angle due prevaling winds
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Backwall
material is pulled straight back out to the sea due to gravity
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Zig Zag
the zig zag movement of materials long the coastline is longshore drift
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