Question 1

Alluvial fans are composed of sediment that is ______-sorted and ____________________ stratified.

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Question 2

Air flows from ____________________ pressure regions to ____________________ pressure regions.

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Question 3

The deflection of a moving mass from a straight line is known as ____________________.

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Question 4

A saline,temporary lake in a desert is known as a(n)____________________ lake.

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Question 5

A playa forms by ____________________ of a playa lake.

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Question 6

Although loess forms in only a few environments,it covers approximately ______ percent of Earth's land surface.

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Question 7

Why are large alluvial fan deposits of importance to human residents of deserts?

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Question 8

High pressure troughs exist where cooler,denser air begins to descend at about ______ to ______ degrees latitude,N and S.

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Question 9

Crescent shaped dunes whose tips point downward are _______ dunes.

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Question 10

The transformation of formerly productive lands into deserts is called ____________________.

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Question 11

Briefly explain how a pediment is formed.

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Question 12

Deserts receive less than ______ centimeters of rain per year,on average.

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Question 13

Stones whose polished,pitted,faceted surfaces have been produced by wind erosion are called ____________________.

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Question 14

How does the topography of the water table in deserts with through-flowing streams result in the restriction of much of the vegetation to the stream banks?

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Question 15

The size of material that is frequently carried as suspended load by wind is ____________________ and ____________________.

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Question 16

The drainage characteristic of most deserts,in which streams dry up and do not have enough water to become integrated and reach outside their drainage areas,is called ____________________ drainage.

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Question 17

The Coriolis effect causes winds to be deflected to the ____________________ of their direction of motion in the Northern Hemisphere and to the ____________________ of their direction of motion in the Southern Hemisphere.

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Question 18

Explain the ways in which alluvial fans and deltas are similar.

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Question 19

The most effective agent of erosion in the deserts is ____________________.

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Question 20

Why are flash floods and sheet flows common in deserts?

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Quiz 15: The Work of Wind and Deserts

Alluvial fans are composed of sediment that is -sorted and ______________ stratified.

Air flows from pressure regions to pressure regions.