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Geography Y9 > How do River Worl > Flashcards

How do River Worl Flashcards

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1
Q

What is the 3 main things a river

A

Erodes
Transports
desposition

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2
Q

What is is erosion

A

The wearing away of materials by natural forces such as water and wind

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3
Q

How many ways can a river erode

A

4

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4
Q

In what 4 ways can a river erode

A

Abrasion
Attrition
Hydraulic action
Solution

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5
Q

Abrasion

A

Sand and stones in the river scrape the bed and banks and wear them away

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6
Q

Attrition

A

Rocks and stones knock together and wear each other away

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7
Q

Hydraulic action

A

Fast flowing water is a forced into cracks in the bank causing it to break up the bank

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8
Q

Solution

A

Water dissolves soluble minerals from the bed and banks

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9
Q

What is the material of that the river carries called

A

The load

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10
Q

Dissolved material is carried along as a solution

A

Solution

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11
Q

Suspension

A

Small light particles of rock and soil are carried along as suspension

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12
Q

Saltation

A

Sand grains and small stones bounce along the river bed

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13
Q

Traction

A

Large stones getting rolled along during periods of flood

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14
Q

How many types of transport is there in rivers

A

4

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15
Q

Oder the 4 methods from the least energy required to the most energy required

A

Solution
Suspension
Saltation
Traction

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16
Q

What happens when the river reaches flatter land

A

It slows down

17
Q

What does the river do since it no longer has energy to carry its load

A

Deposits it

18
Q

Deposited material

A

Sediment

19
Q

The slower the river flows the

A

More it deposits

20
Q

What happened if deposition occurs at the mouth of the sea faster then the sea can get rid of the sediment

A

A delta might form

21
Q

What other features occur due to deposition

A

Levees
Meanders
Beaches
Floodplain

Geography Y9 (10 decks)

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