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Geography Second Year > The Sea > Flashcards

The Sea Flashcards

1
Q

What increases the size of the wave

A

The strength of the wind and length of the sea

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2
Q

What is backwash

A

The water that runs back out from the wave

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3
Q

What is swash

A

The frothy water that rushed onto the shore

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4
Q

What is a destructive wave

A

Occurs during stormy weather. Backwash stronger than swash and erosion occurs

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5
Q

What is a constructive wave

A

Occurs during calm weather. Swash stronger than backwash and deposition occurs

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6
Q

What is hydraulic action

A

The power of the water as it pounds against the coast

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7
Q

What is compressed air

A

Trapped air in the cracks in the rock by the incoming waves. Increases pressure

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8
Q

What is abrasion

A

Occurs when the waves pick up rocks and stones and hurl them against the coast

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9
Q

What is attrition

A

Material is worn down smoothies and rounded as they bounce off each other

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10
Q

What is solution

A

Acids in the water dissolve some rocks eg. limestone

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11
Q

What is a cliff

A

A form of erosion. Destructive waves attack the coast and cut into the rock, eroding a notch. The notch becomes deeper and the the overhang collapses.

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12
Q

What is a bay

A

A wide curved opening into the coast

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13
Q

What is a headland

A

A neck of high land that juts out into the sea

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14
Q

What is a blowhole

A

A passage that links the roof of a cave to the surface of the cliff top.

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15
Q

What is a sea cave

A

A tunnel or passage in the rock at the foot of a cliff. Formed when there is a weak spot.

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16
Q

What is a sea arch

A

A passage that runs right through a headland. Usually formed after a cave is deepened by erosion.

17
Q

What is a beach

A

A build up of sand and shingle deposited by waves.

18
Q

What is a sandspit

A

When there is a change in the shape of the coastline, deposition occurs. Leads to build up of sand.

19
Q

What is a lagoon

A

A area of water that has been cut off from the sea by a bank of sand.

20
Q

What is a sea wall

A

made of concrete to protect towns from attack. Bray.

21
Q

What is a boulder

A

placed at the base of soft cliffs. Reduces erosion as the power of waves is reduced as they hit the boulders

22
Q

What are groynes

A

Low walls often wood built at right angles to the coast. They reduce longshore drift by trapping sand

23
Q

What are gabions

A

Wire cages filled with small stones to reduce the power of the wave.

24
Q

What is uncleared settlement

A

Houses clustered together

25
Q

What is linear settlement

A

Houses built in a line along the road

26
Q

What is dispersed settlement

A

Individual houses scattered randomly around the countryside

27
Q

What causes waves

A

Wind

Geography Second Year (1 decks)

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