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Geography Y8 > River Definitions > Flashcards

River Definitions Flashcards

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1
Q

Tributary

A

A stream or small river which flows into a larger one

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2
Q

Interlocking spurs

A

Projecting areas of high ground around which a river flows

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3
Q

Braiding

A

Where a river divides into two or more interconnecting channels

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4
Q

Delta

A

A large fan shaped area of deposits found at the mouth of a river

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5
Q

Floodplain

A

Flat land across which a river flows usually in its middle or lower course

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6
Q

Potholes

A

Holes in a river bedrock eroded by swirling stones

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7
Q

Meander

A

Pronounced bend on a river

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8
Q

Confluence

A

The point where two rivers join

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9
Q

Watershed

A

The boundary between two river basins

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10
Q

Oxbow Lake

A

A lake formed when a river bend is cut off

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11
Q

Levées

A

Natural embankments on river banks deposited when the river floods

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12
Q

Erosion

A

The process which occurs on the outside of a meander

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13
Q

Load

A

All the material carried by a river

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14
Q

Estuary

A

A wide river mouth ( known as a firth on Scotland )

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15
Q

Source

A

The point at which a river begins

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16
Q

Drainage basin

A

The area drained by a river and its tributaries

17
Q

Deposition

A

The process which occurs on the inside of a meander

18
Q

V-shaped

A

The profile of a valley eroded by a river

19
Q

Alluvium

A

Another name for silt - spread by the river over its floodplain

20
Q

Suspension

A

Fine light mineral is carried along the water

21
Q

Saltation

A

Small pebbles and stones are bounced along the river bed

22
Q

Traction

A

Large boulders and rocks are rolled along the river bed

23
Q

What are the upper course characteristics and features

A

Characteristics
- steep / v shaped valley
- narrow / shallow channel
- high bed load
Features
- v shaped valley
- interlocking spurs
- waterfalls
- gorges

24
Q

What are the middle course characteristics and features

A

Characteristics
- open / gentle sloping valley with floodplain
- wider / deeper channel
- more suspended sediment
Features
- meanders
- river cliffs
- slip of slopes

25
Q

What are the lower course characteristics and features

A

Characteristics
- open / gentle sloping valley with floodplain
- flat & wide floodplain
- wide, open valley
- very wide and very deep channel
Features
- oxbow lakes
- flood plains
- levées

26
Q

What can river erosion create?

A

A V-Shaped valley

Geography Y8 (6 decks)

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