physical uk geography Flashcards

(37 cards)

1
Q

describe north norfolk coast

A

rates of erosion are increased by strong prevailing winds from the north sea
exposure to weathering
soft rock
management in one location can affect other locations

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2
Q

depositional features

A

spits
beaches
bar and lagoons

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3
Q

types of coastal zone managements

A

hold the line
advance the line
strategic realignment
do nothing

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4
Q

types of hard engineering

A

groynes
sea walls
gabions
revetments

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5
Q

types of soft engineering

A

planting vegetation
beach nourishment
offshore breakwater
cliff drainage

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6
Q

types of erosion

A

hydraulic action
attrition
abrasion

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7
Q

hydraulic action

A

water breaks pieces off after it gets into cracks

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8
Q

attrition

A

rounded through bashing together

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9
Q

abrasion

A

friction wears down

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10
Q

igneous rocks

A

old, formed from lava and magma

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11
Q

sedimentary rocks

A

formed from eroded sediments on the sea bed

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12
Q

metamorphic rocks

A

heated and compressed sedimentary rock

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13
Q

glaciation

A

as land is uplifted, rivers erode into it creating v shaped valleys
ice ages bring glaciers to upland areas
a variety of features is left behind once it melts

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14
Q

upland - weathering

A

freeze thaw creates scree slopes
scree is unstable and moves easily in rockfalls
heavy rain increases the risk of landslides

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15
Q

upland - post glacial river processes

A

deep u shaped valleys
misfit streams
mud and silt deposited in valley bottoms making them fertile

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16
Q

lowland landscape - weathering

A

chalk is affected by chemical weathering
tree and shrub roots break up solid rock (biological weathering)

17
Q

lowland - post glacial river and slope processes

A

rivers form on clay soils, but not on chalk
slope processes are slow (soil creep)

18
Q

how does human activity change the landscape

A

planting
cleared land for farming

19
Q

tees exes line

A

from newcastle to plymouth

20
Q

north of the tees exes line

A

older, more resistant rocks
igneous and metamorphic
upland areas

21
Q

south of the tees exes line

A

younger, weaker sedimentary rock
easily lifted and folded
sandstone clay and chalk

22
Q

plucking

A

rocks are pulled from the back wall as water freezes to them

23
Q

scarp and vale

A

resistant rock, like chalk form steep escarpments

24
Q

human activities - agriculture

A

cleared land
field boundaries

25
human activities - forestry
plant trees in a straight pattern, not native to the uk
26
human activities - settlement
straightern river to build houses, land concreted over
27
concordant
parallel
28
discordant
perpendicular
29
constructive
deposition, low frequency
30
destructive
erodes, high frequency
31
mass movement - sliding
when large sections of rock rapidly shift downslope along a straight slip plane
32
mass movement - rockfall
when fragments of rock break away from the cliff face and fall
33
mass movement - slumping
when material shifts downwards, rotating along a curved slip plane, usually as a result of becoming saturated
34
solution
dissolved materials are carried along. you cannot see it
35
suspension
small pieces of sediment are held in the water it looks muddy
36
saltation
rocks bounce
37
traction
rocks roll