Deserts Exam 3

Question 1

Elioan

Answer 1

Lanscape influenced by wind

Question 2

Cold air is

Answer 2

denser than warm air

Question 3

Dry air is

Answer 3

denser than moist air

Question 4

Warm air can

Answer 4

hold more moisture than cold air

Question 5

Subtropical Deserts

Answer 5

are a Result of
Global Circulation Patterns

Question 6

Water –

Answer 6

despite low rainfall, running water is the predominant force shaping most desert landscapes (very effective agent of erosion)
An Arroyo in Arizona

Question 7

Wind -

Answer 7

erodes, transports and deposits sediment in desert
regions

Question 8

Wind eroded land form (4): Desert Pavement

Answer 8

– rocks left behind after wind
carries fines away

Question 9

Wind eroded Land forms

Answer 9

1.Desert Pavement
2.Blowouts
3.Yardangs
4.Ventifacts

Question 10

Deflation

Answer 10

fine-grained sediments removed by wind

Question 11

Wind eroded land form (4): Blowouts

Answer 11

• depressions carved by wind
• created by deflation where only fine particles exist

Question 12

Wind eroded land form (4): Yardangs

Answer 12

– remnants of soil left behind by wind

Question 13

Wind eroded land form (4): Ventifacts

Answer 13

• sandblasted rocks

Question 14

Wind Deposited 1:

Sand Dunes

Answer 14

• mounds of loose sand piled up by the wind

Question 15

Wind Deposited 2:

Loess

Answer 15

– wind-blown silt

Question 16

be able to tell the perdominant wind direction ib two ways

Answer 16

looking at an active barchan dune

Looking at cross bedding in the geologic record

Question 17

whar is a barchan dune

Answer 17

cresent Shaped
horns that point downwind