Landscapes of the UK rivers (River Tees case study) Flashcards

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1
Q

What are 3 specific types of landscape that are found in the UK today?

A

Lowland, upland, glaciated upland

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2
Q

What are the physical characteristics of a lowland landscape?

A
  • An area close to the sea
  • Lies, in general, below 200m above sea level.
  • Landscape is often flat and rolling.
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3
Q

What are the physical characteristics of an upland landscape?

A
  • An area of elevated land that contains hills mountains rising considerably above the surrounding land.
  • Often well above 600m above sea
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4
Q

What are the physical characteristics of a glaciated upland landscape?

A
  • An upland area that was once covered in glaciers.
  • Whilst the glaciers no longer remain, you can see their action in dramatically eroded peaks and ridges.
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5
Q

What separates the upland and lowland areas of England?

A

The Tees-Exe line

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6
Q

What type of rock is found in upland areas?

A

Hard rock (generally igneous)

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7
Q

What type of rock is found in lowland areas?

A

Soft rock (generally sedimentary and metamorphic)

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8
Q

what is a ‘long profile’?

A

A line that shows the change in the gradient of the river course from the source to the mouth.

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9
Q

What is a ‘cross profile’?

A

A cross section of the river - this shows a ‘slice’ of the river valley and channel

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10
Q

What is a V-shaped valley?

A

A valley with steep sides and a narrow bottom that has been formed by erosion + weathering

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11
Q

What is a tributary?

A

A smaller river or stream flowing into a larger river

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12
Q

What is a confluence?

A

The point where two rivers meet

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13
Q

Define ‘load’

A

The material carried by a river

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14
Q

What is ‘sediment’?

A

Small particles of material such as sand and clay that is carried by a river

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15
Q

What are the characteristics of the upper course of a river?

A
  • Steep gradient
  • Narrow V-shaped valley
  • Narrow/shallow river
  • Large angular sediment load
  • Mostly erosion taking place
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16
Q

What are the characteristics of the middle course of a river?

A
  • Shallower gradient
  • Asymmetrical valley cross section
  • Deeper river
  • Smaller/rounded load
  • Balance between erosion and transportation taking place
17
Q

What are the characteristics of the lower course of a river?

A
  • Very low gradient
  • U-shaped valley
  • Wide/deep river
  • Small suspended load
  • Mostly deposition taking place
18
Q

Define ‘erosion’?

A

The wearing away of rock by the natural processes of rivers, ice, wind and sea

19
Q

Name the 4 processes of river erosion

A

Abrasion
Attrition
Hydraulic Action
Solution

20
Q

Define ‘hydraulic action’

A

Fast flowing water pushes air into cracks and the force of this causes the banks to break up over time

21
Q

Define ‘abrasion’

A

Sand and pebbles are dragged along the river bed, wearing it away

22
Q

Define ‘attrition’

A

Rocks and stones wear each other away as they knock together

23
Q

Define ‘solution’ (erosion)

A

Rocks such as limestone are dissolved in acid rainwater

24
Q

Define ‘transportation’?

A

The movement of eroded material by natural processes such as wind, rivers and sea

25
Q

Name the 4 processes of river transportation

A

Traction
Saltation
Suspension
Solution

26
Q

Define ‘traction’

A

Big boulders and stones are rolled and dragged along the river bed

27
Q

Define ‘saltation’

A

Stones and pebbles bounce along the river bed

28
Q

Define ‘suspension’

A

Smaller particles and stones (e.g. sand and silt) are carried along in the rivers flow.

29
Q

Define ‘solution’

A

Some material is dissolved into the river water and transported this way

30
Q

What does ‘deposition’ mean?

A

When a river drops the sediment that it is carrying

31
Q

Why will a river deposit its load?

A
  • Drier weather (less water so less energy)
  • River slows in speed (less speed so less energy e.g. inside bend of a river)
  • River floods (water flows onto the flood plain, loses energy and deposits sediment)
32
Q

Name the river landforms formed by erosion

A

Waterfalls
Gorges
Interlocking spurs

33
Q

Name the river landforms formed by erosion and deposition

A

Meanders
Ox-bow lakes

34
Q

Name landforms created by deposition

A

Floodplains
Levees