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GEOGRAPHY > Hydrological System > Flashcards

Hydrological System Flashcards

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1
Q

Thalweg?

A

The fastest flowing water line in a river

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2
Q

Gorge?

A

Section of steep valley carved out by a waterfall receding

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3
Q

What process creates waterfalls?

A

Erosion.

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4
Q

What are Levees?

A

Raised section of land around the river in the middle and lower course created by deposition

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5
Q

Erosion processes?

A

Solution attrition abrasion hydraulic action

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6
Q

Transportation processes?

A

Dissolved, suspension bedload traction (rolling rocks and stones)

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7
Q

What is deposited first?

A

heavier material then lighter

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8
Q

what can deposition create?

A

floodplains

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9
Q

watershed?

A

a peak that divides precipitation into 1 or more drainage basins

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10
Q

what are the 3 courses of the river

A

upper, middle, lower

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11
Q

what is a river catchment or a drainage basin?

A

It is an area where water that feeds a river collects.

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12
Q

Tributary?

A

a stream flowing into a larger river

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13
Q

Confluence?

A

The point at which a tributary joins a river

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14
Q

What are some features of the upper course?

A

waterfall, interlocking spurs, v-shaped valley

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15
Q

What are some features of the middle course?

A

floodplain, meanders, gorges

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16
Q

what are some features of the lower course

A

floodplain, levees, estuary, delta

17
Q

what is the area at the bottom of the waterfall?

A

plunge pool

18
Q

what are the two rock types in a waterfall?

A

the hard rock at the top and the soft rock at the bottom

19
Q

how are ox-bow lakes formed?

A

A meander gets cut off during heavy flooding.

20
Q

what is an estuary?

A

where freshwater meets saltwater (like a mouth of a river)

21
Q

what is a distributary?

A

little streams in a delta that run off into the salt water area.

22
Q

what is a delta?

A

It is where a river reaches its mouth so deposition occurs and builds a plain at the mouth.

GEOGRAPHY (2 decks)

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