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Geography Component 2 > River Case Study > Flashcards

River Case Study Flashcards

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1
Q

River case study

A

River Eden

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2
Q

River Eden/location

A

North west England

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3
Q

River discharge

A

AreaXvolume

volume of water flowing through a river channel. Measured in cubic metres per second

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4
Q

River Eden/lower course

A

Lower course valley very wide and flat

Very large discharge. Very low friction from channel sides

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5
Q

River Eden/lower course location

A

Carlisle

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6
Q

Weathering

A

Breaks down rocks on valley sides

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7
Q

Mechanical weathering

A

Freeze thaw
Frozen water gets into cracks and expands putting pressure onto rocks

When water thaws is contracts releasing pressure on rock

Repeating this widen cracks breaks down rocks

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8
Q

Chemical weathering

A

Carbon dioxide dissolved in sea/rain water making them weak carbonic acid

Acid reacting with calcium carbonate water dissolving it

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9
Q

Biological weathering

A

Broken by living things

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10
Q

Hydraulic power

A

Wave crash against rock putting pressure on rocks

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11
Q

Abrasion

A

Eroded particles rub and scrape against rock

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12
Q

Attrition

A

Eroded particles smash eachother

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13
Q

River Eden/flood dates

A

2005 2009 2015

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13
Q

River Eden/Carlise

A

Urban city with many impermeable concrete

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13
Q

Flood effect social

A

3000 homes flooded 2005
5200 2015

United Biscuits factory (cities biggest employer) closed for weeks before eventually reopeinging with a smaller work force

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13
Q

Flood effect economic

A

Many businesses and transport and infrastructure damaged

Flooding cost
£100mill 2005

£270mill 2009

£400-500mill 2015

13
Q

Flood effect environment

A

Many rivers eroded, adds risk to future floods

Rivers chocked with debris and contaminated with sewage and pollution

13
Q

Flood cause

A

Sheep farming

Snow is common on higher ground in autumn/winter which melts in rain and heat

Cumbria is on the west coast of the UK facing prevailing SW winds. It recieves a lot of frontal and relief rain

Geography Component 2 (2 decks)

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