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Geography - P1 and P2 > Rivers > Flashcards

Rivers Flashcards

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1
Q

Cross Profile

A

A cross section

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2
Q

Long profile

A

Shows gradient of the river, lengthways

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3
Q

Features of upper course? (Name 3-4)

A

Waterfalls, Hilly, V-Shaped Valleys, Narrow Channel, Tributaries, Gorges

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4
Q

Features of middle course? (3-4)

A

Wider Channel, flatter landscape, meanders, oxbow lakes, flooding

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5
Q

Features of Lower Course (Name 2)

A

Flood Plains, Estuaries

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6
Q

A hydrograph shows…

A

Base flow, the contribution made to the river by soil and groundwater flows.

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7
Q

Runoff or storm flow is…

A

Water that arrives in the river via surface runoff

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8
Q

The rising limb…

A

Shows how fast water is reaching the channel and the level of rising water. The steeper the limb, the greater the likelihood of a flood.

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9
Q

The falling limb…

A

Shows the river as its level falls.

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10
Q

Peak discharge is…

A

The highest amount of discharge reached by a river during a flood

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11
Q

Lag time is…

A

The amount of time between the peak rainfall and peak discharge in a river.

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12
Q

Discharge is…

A

The volume of water flowing through a channel (cumecs m3)

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13
Q

Hydraulic action is… - Rivers

A

The breaking apart of rock through the force of the water

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14
Q

Abrasion is… - Rivers

A

Rocks carried in the river wearing away at the bed and banks

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15
Q

Attrition is… - Rivers

A

Rocks crashing into one another, becoming even more rounded until they are silt

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16
Q

Solution is… - Rivers

A

Rocks being slowly eroded by slightly acidic water

17
Q

Traction is… - Rivers

A

Heavy rocks being rolled along the river bed

18
Q

Saltation is… - Rivers

A

Smaller rocks and pebbles bouncing along the river bed

19
Q

Suspension is… - Rivers

A

Small particles of sediment being carried along, suspended in the water

20
Q

Solution is… - Rivers

A

Light materials being dissolved into the water and being transported

21
Q

Deposition works by… - Rivers

A

The coarsest materials being deposited first due to a lack of energy, the finest last

Geography - P1 and P2 (18 decks)

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