Rivers Flashcards

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1
Q

What is a Flash Flood

A

High volumes of water in a short space of time

Very hard baked ground cannot absorb water. This increases overland low causing rivers to overflow.

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2
Q

What is Abstraction of Water

A

Taking water from a source. This can be surface water or ground water.

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3
Q

What is Aguifers - Abstraction

A

These are ground water stores found in porous rock types such as chalk.

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4
Q

What is Re-Charge

A

Water entering an Aguifer

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5
Q

What is Discharge

A

Water leaving an Aguifer

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6
Q

What is Overabstraction

A

When Discharge is higher than Re-charge

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7
Q

Why is water abstracted from Aguifers?

A

Drinking Water
Farming + Irrigation
Industry
The chalk filters the water which is very pure.

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8
Q

Attrition

A

Rocks collide

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9
Q

Solution/Corrosion

A

Rocks dissolve

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10
Q

Suspension

A

Clay + Sediment carried in a river

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11
Q

Saltation

A

Small rocks and pebbles bounce along the river bed

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12
Q

Traction

A

Large rocks and boulders

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13
Q

Hydraulic Action

A

Force of the water

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14
Q

Abrasion

A

Scraping

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