Places In The Uk,Rivers And Floods Flashcards

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1
Q

What’s are the highest land points?

A

Snowdonia, Brecon Beacons and Exmoor

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2
Q

What are the lowest lowlands?

A

Central lowlands, Norfolk fens and Somerset levels

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3
Q

What are the main rivers?

A

Thames, Severn and Tyne

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4
Q

What does interception mean?

A

When the trees and plants suck up excess water

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5
Q

What comes with interception?

A

Evapotranspiration, when the trees let out water vapour through the stomata.

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6
Q

What’s infiltration?

A

When water gets absorbed by the ground.

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7
Q

What’s percolation?

A

When water gets filtered by aerated soil due to gravity.

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8
Q

What’s through flow?

A

Water flowing horizontally through the soil into the river

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9
Q

What’s groundwater flow?

A

Water flowing horizontally through rock into a river.

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10
Q

What’s drainage basin?

A

An area from which a river gets its water

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11
Q

What’s a watershed

A

The boundary lined by an imaginary line of highland

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12
Q

What’s a long profile?

A

The course of a river from its mouth to source

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13
Q

What’s abrasion?

A

When bedload rub against each other creating sediment

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14
Q

What’s traction?

A

Largest material load are rolled along the river bed. Upper course

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15
Q

What’s saltation?

A

Smaller stones are bounced along the river bed. Upper and middle

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16
Q

How are the sides of v-shaped valleys worn away?

A

By freezethaw and biological weathering.

17
Q

What’s an interlocking spur?

A

Bits of rock sticking out of the valley that the river has to wind around as they are too hard to erode

18
Q

What’s splash back?

A

When a waterfalls water splashes the underneath of the slope, creating an undercut.

19
Q

How does the river get more water?

A

Tributaries join

20
Q

How do meanders start to form?

A

The river has more energy therefore it starts to meander which causes lateral erosion

21
Q

What’s a slip off slope made up of?

A

Alluvium

22
Q

What’s the fastest flow called?

A

Thalweg

23
Q

How are floodplains and levees linked?

A

They are created by repeated flooding of a river. Also they are co-dependant, meaning they are caused by each other

24
Q

What’s discharge?

A

The amount of water passing a given point in a river at any moment in time. It’s measured in cumecs

25
Q

What’s the formula for river discharge?

A

RD= cross sectional area x rivers average velocity

26
Q

What’s a lag time?

A

Time between peak flow and peak rainfall

27
Q

How are flood likely rivers shown on a graph?

A

Short lag time and high peak discharge

28
Q

What’s are rivers called when they respond rapidly to rainfall?

A

Flashy

29
Q

What factors affect rainfall?

A

Weather, deforestation, relief and rock type

30
Q

What’s relief?

A

How the land changes in terms of height

31
Q

What’s hard engineering?

A

Expensive, quality, reliable flood management

32
Q

What’s soft engineering ?

A

Less intrusive, cheaper, more sustainable

33
Q

Types of hard engineering

A

Dams, embankments

34
Q

Types of soft engineering

A

Afforestation, warning system

35
Q

What are some of the ways York adapts to flooding?

A

There is complex geography so hard engineering is used, such as the Clifton ings which can store 2.3 mil cubic meters of water and lowered peak flood levels by 150 millilitres