16: running water Flashcards

1
Q

the land are that contributed water to a stream is called a

A

drainage basin

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2
Q

a steep walled notch in a ridge through which a stream flows

A

water gap

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3
Q

the flow of water in a stream can be

A

laminar or turbulent

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4
Q

capacity refers to

A

the amount of sediment a river can hold

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5
Q

competence refers to

A

the size of sediment or particles the river is carrying

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6
Q

sediment deposited by streams is called

A

alluvium

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7
Q

meanders are enhanced through erosion at the

A

cut bank

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8
Q

braided channels occur in streams that experience

A

highly variable discharge

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9
Q

includes the channel itself, adjacent floodplain, and steep valley walls

A

stream valley

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10
Q

streams erode downward until they reach

A

base level

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11
Q

a stream that has reached equilibrium with its base level and primarily works to transport sediment

A

graded stream

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12
Q

streams underlain by deep alluvium are likely to develop

A

terraces

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13
Q

what may form when a river deposits sediment into the mouth of another body of water

A

a delta

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14
Q

what results from sediment being deposited along the margins of a river channel by many years of successive floods

A

natural levees

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15
Q

fan shaped deposits of alluvium that form where steep mountain fronts drop down into adjacent valleys

A

alluvial fan

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16
Q

what occurs when a stream receives more discharge than its channel can hold?

A

a flood