from constuctive waves as they deposit the materials and spit and bar are then formed from longshore drift
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what is caused by a erosion and depostion?
Tombolo
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give an expample of where you can find theses landforms?
cave,arch,stack,stump- old harrys rock /beach,spit- dawlish warrern/bar,tombolo-chesil beach
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what is hard engineering?
an expensive way to protect the coastline and are not very suistainble and needs high maintaince and also damage the envoirment.
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an example of coastal hard engineering?
curved sea wall.
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what is soft engineering?
a cheaper way to protect the coast.less maintaince needed so sustainable also dont harm the enviorment.
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give an example of coastal soft engineering?
beach managment
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explain managed retreat?
soft engineering where you just let nature do its thing
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why is hard and soft engineering needed in rivers?
to help prevent flooding. and hard engineering is more expensive but suitanble in river defences
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give an example of soft and hard engineering in rivers?
dam constuction/afforestaion
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what river landform would you find in the upper course?
waterfall
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how is a waterfall formed?
the soft rock is erode away by undercutting which leaves the hard rock to hang over which eventual falls causing more ersion which then cause a pludge pool.
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what landform would you find in the middle course?
meander
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how is a meander formed?
by erosion and depostion ouside of the bend is erode away and inside is depostioned
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what landform would you find in a lowercourse?
delta
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how is delta formed?
found at the mouth of the river where it deposits materials faster than the sea can remove it.
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what are the 3 types of deltas?
fan shaped,cuspate,birds foot.
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what is the fan shaped delta like?
land around the river mouth arches out into the sea and the river splits many times on the way to the sea, creating a fan effect
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what is a cuspate delta like?
land around the mouth of the river juts out arrow-like into the sea.
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what is a birds foot delta like?
river splits on the way to the sea, each part of the river juts out into the sea, rather like a bird's foot.
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name a river which contains waterfall,meander and a birds foot delta?
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