Coastal Transportation and Depostion

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What does transportation mean?
the movement of material
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Material is transported along coasts by a process called?
longshore drift
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Waves follow the direction of?
prevailing(most common) wind
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They usually hit the coast at?
oblique angle (not a right angle)
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The swash carries and in what direction?
material up the beach in the same direction of the waves
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The backwash carries and what direction?
carries material down the beach at right angles back towards the sea
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What material is along the coast?
zig zag material
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What are the four process of erosion?
traction,saltation,suspension and solution
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What does traction mean?
large particles like boulders are pushed along the sea bed by the force of water
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What does Saltation mean?
pebble sized particles are bounced along the sea bed by the force of water
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What does suspension mean?
small particles like silt and clay are carried along in the water
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What does solution mean?
soluable materials dissolve in the water and are carried along
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What does deposition mean?
dropping of material
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When are coasts built up?
when the amount pf deposition is greater than the amount of erosion
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The amount pf material that deposited on an area of coast is increased when?
There is lots of erosion elsewhere on the coast, so there is lots of material available and there is lots of transportation of material into the area
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What do low energy (slow)waves do?
carry material to the coast but they are not strong enough to take a lot of material away
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This means?
there is lots of deposition and very little erosion
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Waves that deposit more material than they erode are called?
contructive waves
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What frequency is constructive waves?
low (6-8 per min)
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How do they look like?
low and long
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What does the swash look like?
It is powerful and carries material up the coast
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What does the backswash look like?
It is weaker and it doesn't take up a lot of material back down the coast. This means the material is deposited on the coast
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Other cards in this set

Card 2

Front

Material is transported along coasts by a process called?

Back

longshore drift

Card 3

Front

Waves follow the direction of?

Back

Preview of the front of card 3

Card 4

Front

They usually hit the coast at?

Back

Preview of the front of card 4

Card 5

Front

The swash carries and in what direction?

Back

Preview of the front of card 5
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