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Geography: Climate and Weather > Geomorphology > Flashcards

Geomorphology Flashcards

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1
Q

what is a catchment area

A

area over which rain falls and is caught by a drainage basin

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2
Q

what is infiltration

A

movement of water through soil into the ground

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3
Q

what is a confluence

A

place where two rivers join

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4
Q

what is a tributary

A

a river that joins a larger river

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5
Q

what is a river mouth

A

sea or lake where river ends

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6
Q

what is a source

A

where a river begins

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7
Q

what is a watershed

A

high lying area separating two drainage basins

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8
Q

what is a water table

A

upper level of underground saturated rock

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9
Q

what is run-off

A

the surface flow of water

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10
Q

what is ground water

A

water found under the ground

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11
Q

what is an interfluve

A

a high lying area between two river valleys

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12
Q

what is a river system

A

main river with all its tributaries

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13
Q

what are the four types of rivers

A

permanent, periodic, episodic, exotic

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14
Q

what is a permanent river

A

a river that flows all year

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15
Q

what is a periodic river

A

a river that flows in rainy season

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16
Q

what is an episodic river

A

a river that flows after heavy rainfall

17
Q

what is an exotic river

A

a river that spans two types of climatic regions

18
Q

what are the characteristics of a high drainage density

A

high rainfall
hard rocks
steep slopes
less vegetation
less infiltration

19
Q

what are the characteristics of low drainage density

A

low rainfall
softer rocks
gentle slopes
lots of vegetation
more infiltration

20
Q

what is laminar flow

A

water flows as parallel sheets
river bed is even
less erosion
(lower course)

21
Q

what is turbulent flow

A

water flows bubbling/turbulent
river bed is uneven
more erosion
(upper course)

22
Q

what are the seven drainage patterns

A

dendritic, trellis, radial, rectangular, centripetal, deranged, parallel

23
Q

describe the dendritic drainage pattern

A

looks like branches of a tree, tributaries join at acute angles

24
Q

describe the trellis drainage pattern

A

strong main stream joined by short tributaries at right angles

25
Q

describe the radial drainage pattern

A

looks like spokes of a wheel when viewd from above

26
Q

describe the rectangular drainage pattern

A

tributaries join at right angles and have bends of 90 degress

27
Q

describe the centripetal drainage pattern

A

opposite of radial pattern

28
Q

describe the deranged drainage pattern

A

small streams that have no specific pattern

29
Q

describe the parallel drainage pattern

A

streams flow parallel to each other

Geography: Climate and Weather (2 decks)

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