Chapter 16

Question 1

To qualify as a desert, a region must be

Answer 1

arid, with less than 25 cm annual precipitation and very low relative humidity

Question 2

As compared to humid climates, rates of chemical weathering in deserts are

Answer 2

slower

Question 3

Saltation of sand involves _____

Answer 3

grains hopping into the air, traveling for a short distance, and returning to the ground

Question 4

Which statement does apply? Desertification occurs

Answer 4

when continents move into dry climates in low latitude zones
as a result of global climate change
as a result overgrazing
when humans strip a landscape for firewood

Question 5

This drawing shows _____ dunes.

Answer 5

barchan

Question 6

Which of the following is eolian in origin?

Answer 6

loess

Question 7

The prevailing wind direction at the time that these ancient sand dunes were deposited was 16b

Answer 7

from the left.

Question 8

A lag deposit, or desert pavement, is a concentration of

Answer 8

gravel-size particles left behind as wind selectively moves sand and dust from the surface.

Question 9

The migration of sand dunes results from

Answer 9

erosion of sand on the windward side and deposition on the slip face.

Question 10

Globaly most deserts are found?

Answer 10

above 66 degrees north and south latitude (near the poles).

near 30 degrees north and 30 degrees south latitude (subtropics).