Water On The Land Flashcards

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1
Q

Name four features the upper course of the river has

A
V shaped valley
Vertical erosion
Lots of energy
Erodes down
Source 
Waterfall 
Gorge 
Interlocking Spurs
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2
Q

Name 3 features of a middle course

A
Medium valley
Lateral erosion
Transports the load
Flood plain 
Ox bow lake 
Meander 
Slip off slope
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3
Q

Name 3 features of the lower course

A
Large valley 
Flood plain
Mouth 
Estuary 
Delta
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4
Q

What is hydraulic action

A

The sheer force of the water

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5
Q

What is abrasion

A

The rivers load bashing against the river bed

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6
Q

What is attrition

A

The load bashing against each other

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7
Q

What is solution in terms of erosion

A

Water dissolving particles of the rivers load

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8
Q

What is traction

A

Large boulders moving along the river bed

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9
Q

What is saltation

A

Pebbles bouncing along the river bed

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10
Q

What is suspension

A

Small particles of mud in water this is what gives it it’s brown colour

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11
Q

What is solution in terms of transportation

A

Minerals being dissolved into the water and carried that way

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12
Q

What type of rock is at the top of a waterfall

A

More resistant rock

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13
Q

What type of rock is lower than the more resistant rock

A

Less resistant rock

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14
Q

What topples over in a water fall to cause the formation of a gorge

A

An overhang

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15
Q

What does hydraulic action cause in a water fall

A

The plunge pool

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16
Q

What features are on the inside of a meander

A

Slip off slopes
Slow flooding
Leads to deposition

17
Q

What features are located at the outside of a meander

A

River cliff
Lateral erosion
Fast flowing

18
Q

How does a swan neck meander form

A

Tight meander
Erosion tightens it
A new channel forms
Deposition occurs leaving silt at the edges of the former route

19
Q

What forms a bank at a levee

A

The deposition of silt due to frequent floods

20
Q

On a hydrograph what is the lag time

A

The difference between peak rain fall and peak discharge

21
Q

On a hydrograph what does the bar chart show

A

The amount of rain

22
Q

On a hydrograph what does the line graph represent

A

The discharge measured in meters^3 per second

23
Q

Name four out of an available 7 factors increasing the likelihood of a flood

A
Any from:
Previous conditions (frozen)
Relief
Precipitation 
Deforestation
The building of impermeable surfaces 
Temperature 
Rock type
24
Q

Name the four social effects of a flood

A
Death
Disease
Damage 
Disruption 
(The four D's)
25
Q

Name the four environmental impacts of a flood

A

Landslides
Loss of habitat
Loss of crops
Contamination

26
Q

Name three hard engineering methods to manage flooding

A

Dams and reservoirs
River straightening
Artificial levées

27
Q

Name 4 soft engineering methods to manage flooding

A

Flood warnings
Preparation
Floodplain zoning
Nothing

28
Q

Which area is in need of water the most in the UK

A

The south they are in an area of water deficit or stress

29
Q

What are the two positive economic impacts of a resevoir

A

Creates jobs

Produces electricity

30
Q

What is a negative economic impact of a resevoir

A

The Initial cost

31
Q

Social impacts of a resevoir

A

Recreation
Reduces spread of disease
Flood protection

32
Q

How are habitats effected by a resevoir

A

Initially damaged but later reservoirs can be used to build new habitats