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Geography > Coast > Flashcards

Coast Flashcards

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1
Q

What is transportation

A

The process of moving sediment once it has been eroded

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2
Q

What is wave refraction

A

When waves bend as one end of the wave enters shallower water before the other, slowing it down, whilst the other end goes faster

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3
Q

Mud flow/mud slide

A

Saturated soil (full of water ) and weak rock flows down a slope

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4
Q

Dune regeneration

A

Replanting species such as marram grass to help re-establish dunes as a barrier to the waves

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5
Q

Fetch

A

The distance of the sea over which the wind blows to create waves

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6
Q

Discordant coastline

A

When different bands of rock are perpendicular to the coastline

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7
Q

Concordant coastline

A

When different bands of rock are parallel to the coastline

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8
Q

Berm

A

A ridge of higher sand or shingle ( running perpendicular to the shoreline) indicating the high tide mark

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9
Q

Carbonation

A

A type of chemical weathering where rocks containing calcium carbonate dissolve via rainwater

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10
Q

Attrition

A

Rock fragments carried by the sea knock against each other making them smaller and rounder

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11
Q

Beach nourishment

A

Artificially added sand or shingle to build a beach back up

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12
Q

How many groins are their at Eastbourne

A

94

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13
Q

What is rock armour

A

A barrier of hard rocks such as granite blocking the wave from hitting what’s behind it

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14
Q

How many groynes are there at Eastbourne

A

94

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15
Q

Transportation meaning

A

How sediment gets to different places

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16
Q

Erosion meaning

A

the wearing away of rock

17
Q

Deposition

A

When waves lose energy and drop their sediment

18
Q

Weathering meaning

A

The breakdown of rock in one place

19
Q

Hydraulic action meaning

A

the sheer power of the waves as they smash against the cliff. Air becomes trapped in the cracks in the rock and causes the rock to break apart

20
Q

Abrasion meaning

A

Abrasion - this is when sediment in the waves grind along the cliff face

21
Q

Attrition meaning

A

when rocks that the sea is carrying knock against each other. They break apart to become smaller and more rounded

22
Q

Solution meaning

A

when sea water dissolves certain types of rocks. In the UK, chalk and limestone cliffs are prone to this type of erosion.

23
Q

Traction meaning

A

the rolling or dragging of large grains along a river bed or shore

24
Q

Saltation meaning

A

the bouncing of sand grains as they are picked up, carried along, and dropped repeatedly by flowing water or air

25
Q

Suspension meaning

A

Finer sediment is carried in air

Geography (6 decks)

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