rivers Flashcards

(23 cards)

1
Q

what is the source of a river

A

where the river starts

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2
Q

what determines where water flows

A

gravity and topography

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3
Q

water budget

A

describes the income and spending of water in a region

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4
Q

water budget income/input

A

precipitation and runoff

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5
Q

water budget spending

A

evaporation and outflow

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6
Q

what is bedrock

A

what the ground is made of determines the shape of the river

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7
Q

what shape does harder rock make a river

A

straight

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8
Q

what shape does softer rock make a river

A

curvy

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9
Q

what is weathering

A

the breakdown of materials into smaller pieces

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10
Q

erosion

A

the movement of sediment

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11
Q

deposition

A

the dropping or settling of sediment

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12
Q

what are the uppercourse features

A

waterfalls, braided streams, v-shaped valleys

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13
Q

middle course features

A

wider shallower valleys, meanders, oxbo lakes

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14
Q

low course features

A

mouth, floodplains, levees

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15
Q

stage height

A

how high a river is flowing on any given day

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16
Q

floodplain

A

forms from sediments put into when the river overflows its banks

17
Q

what type of river will stay in flux longer after a rainfall event

18
Q

what type of river will rise faster after a rainfall event

19
Q

what is the change in elevation

20
Q

what is a watershed

A

creeks or streams that all go to one main large body of water

21
Q

what is flux

A

how long it takes from the river to start from the river to end

22
Q

what effects a hydrograph

A

runoffs, gradient

23
Q

what slows a runoff

A

infiltration rates such of soil and surface types