coastal landforms Flashcards

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1
Q

bay

A

A low-lying inlet of land on the coast.

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2
Q

headland

A

A high area of land that extends out into the sea.

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3
Q

longshore drift

A

The movement of material along a coastline due to the angled approach of waves.

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4
Q

mass movement

A

A large-scale downward movement of rocks and material.

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5
Q

Able to withstand change, eg resistant rocks are hard and are not easily eroded.

A

resistant

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6
Q

sheltered bay

A

A coastal area that is protected from strong winds and large waves.

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7
Q

Processes located at the Earth’s surface.

A

sub aerial process

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8
Q

An area of erosion at the base of a cliff formed by the waves.

A

wave-cut notch

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9
Q

A flat area in front of a cliff, just below the low tide mark. These were formed when the waves eroded the cliff, but left a flat platform behind.

A

wave-cut platform

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10
Q

The coastline is constantly eroding. There are four key types of erosion

A

Abrasion - waves transport material which hit the cliff and gradually wear it away.
Hydraulic action - as waves approach the coast they trap air and force it into gaps in the cliff. Eventually this weakens the rock.
Attrition - waves cause the rocks to crash against each other, breaking them down into smaller and rounder pieces.
Corrosion (also known as solution) - salts and acids in seawater dissolve the rock gradually over thousands of years.
In addition, changes in landforms can be a result of wind erosion, weathering and sub-aerial processes such as mass movement.

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