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Geography > 3) The Dorset Coast > Flashcards

3) The Dorset Coast Flashcards

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1
Q

What are the white cliffs made from?

A

Chalk

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2
Q

How is an arch formed?

A

When a notch expands into a cave into an arch

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3
Q

example of a bay in dorset coast

A

Swanage bay

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4
Q

example of a headland

A

the Foreland

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5
Q

example of an arch

A

durdle door

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6
Q

example of a stack

A

old harry rocks

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7
Q

example of a stump

A

old harry’s wife

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8
Q

how is the roof of an arch eroded?

A

weathering (freeze thaw, chemical and biological)

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9
Q

what is durdle door made from?

A

limestone

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10
Q

Example of a spit?

A

Chesil beach

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11
Q

How was Chesil beach (a spit) formed?

A

Longshore drift

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12
Q

Main form of mechanical weathering

A

Salt weathering, especially in summer

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13
Q

Why is freeze thaw weathering less common?

A

Winters are mild

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14
Q

How does its location influence erosion?

A

Exposed to prevailing wind, which brings storms

Storms bring destructive waves which increase rate of erosion

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15
Q

What is Lulworth Cove made from which makes it easily eroded?

A

Clay - a soft rock

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16
Q

3 ways of preserving the coastline

A

Groynes, sea walls, beach replenishment

17
Q

Where have groynes been erected and why?

A

Swanage beach to stop the loss of beach material

18
Q

How much did beach replenishment of Swanage beach cost?

A

£5 million

19
Q

How is quarrying shaping the landscape?

A

Lots of quarrying exposes rock to chemical weathering and erosion

20
Q

What limestone is Lulworth cove made from?

A

Purbeck limestone

21
Q

Example of a tombolo

A

Chesil beach

22
Q

What two places does Chesil Beach connect?

A

Isle of Purbeck to the mainland

23
Q

Example of a depositional landform

A

Mudeford spit

24
Q

How was mudeford spit formed?

A

Longshore drift of material from Bournemouth beach

25
Q

What are berms?

A

A series of ridges marking the lower tides

26
Q

Main form of mechanical weathering?

A

Salt weathering

27
Q

Reasons to protect the Dorset Coast 3

A

Over a million toursists per year
Site of special scientific interest (SSSI)
Erosion is increasing

28
Q

Ways to protect the beach 4

A

Beach replenishment
Long groyne
Gabions
Ironstone doggers

Geography (30 decks)

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