Coasts Flashcards

1
Q

Name the two types of wave

A

Constructive
Destructive

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2
Q

Give 5 characteristics of constructive waves

A

Long wavelength
Low wave height
Strong Swash
Weak Backwash
Cause deposition of sediment
Occur up to 9 times per minute

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3
Q

Give 5 characteristics of destructive waves

A

Short wavelength
High wave height
Weak swash
Strong Backwash
Cause coastal erosion
Occur 10-15 times per minute

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4
Q

Define Relief

A

The way the landscape changes height

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5
Q

Define Upland

A

High above sea level

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6
Q

Define Lowland

A

Not very high above sea level

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7
Q

What is the difference between uplands and lowlands?

A

Uplands are high above sea level whereas lowlands aren’t very high above sea level

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8
Q

Give an example of an upland area in Scotland

A

Northwest Highlands
Cairngorm Mountains
Grampian Mountains
Southern Uplands

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9
Q

Give an example of an upland area in Wales

A

Snowdonia
Brecon Beacons

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10
Q

Give an example of an upland area in England

A

Pennines
Lake District
Dartmoor
Exmoor

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11
Q

Give an example of a lowland area

A

The midlands
London Basin
The Vale of York
Lincolnshire

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12
Q

What creates waves?

A

Wind blowing across the surface of the water

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13
Q

Define Prevailing Wind

A

The main direction the wind comes from

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14
Q

Define Fetch

A

The distance the wind has travelled across the sea or ocean

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15
Q

What is the difference between the swash and backwash?

A

The swash washes up on the beach after an incoming wave has broken but the backwash is the water running back down the beach

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16
Q

Which type of wave has a strong backwash?

A

Destructive

17
Q

Which type of wave has a low frequency?

A

Constructive

18
Q

Which type of wave has a low wave height?

A

Constructive

19
Q

Define Weathering

A

The breakdown of rock in situ (where it is)

20
Q

What are the 3 types of weathering?

A

Mechanical
Biological
Chemical

21
Q

What type of weathering is freeze-thaw?

A

Mechanical

22
Q

What type of weathering is this:
Roots in the sides of cliffs cause rock to break away?

A

Biological

23
Q

Define biological weathering

A

Weakening of rock by plants, animals and microbes
Growing plant roots can exert stress/pressure on rock

24
Q

Define chemical weathering

A

Breakdown of rocks due to the interaction of air, water or acid with the chemical composition of the rock

25
Define mechanical weathering
The breakdown of rocks by physical factors in the environment such as wind, water and temperature E.g. freeze-thaw
26
Define mass movement
bulk movements of soil and rock debris down slopes in response to the pull of gravity
27
Name the 3 types of mass movement
Sliding Slumping Rockfall
28
Define slides
Material shifts in a straight line
29
Define slumps
Material shifts with a rotation
30
Define rockfalls
Material shifts vertically