processes Flashcards

1
Q

hydraulic action (coastal)

A

pounding waves compress trapped air in the rocks creating an explosive blast which weakens and loosens rock fragments.

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2
Q

solution

A

carbonic acid/salts in sea water dissolves rock.

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3
Q

abrasion/corrosion (coastal)

A

rock fragments thrown against the headland break down the cliff face wearing away the rock.

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4
Q

hydraulic action (hydrosphere)

A

compresses air into the riverbank causing materials to be dislodged.

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5
Q

abrasion ( hydrosphere)

A

the force of water throws bedload against the bank causing a scouring action.

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6
Q

solution (hydrosphere)

A

when acids in the water react with soluble bedrock.

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7
Q

plucking

A

when ice freezes onto bedrock, pulling away loose rocks from the vallry side.

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8
Q

abrasion (glaciation)

A

amgular rock embedded in the ice grinds the valley floor.

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9
Q

freeze thaw weathering

A

when water in cracks in the rocks freezes, expands and contactd weakening the rock until rock fragments break off.

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10
Q

longshore drift

A

zig zag movement of the waves

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11
Q

swash

A

where waves push materials up the beach at an angle due to prevailing wind

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