EARTH: AN INTRODUCTION TO PHYSICAL GEOLOGY

Chapter 19: Deserts and Winds

Concept #4 Quiz

Choose the best possible answer to the following questions about Key Concept 4 "Erosion by wind."

desert_arch_tarbuck_rshad.jpg
The "desert arch."

1. What has to be true in order for wind to be an effective erosive agent? [Hint]

2.

Match the following features of deserts with the appropriate description:  

Using the pulldown boxes, match each item on the left to the corresponding item at right.

A. a stony veneer created as the land level lowers by the removal of smaller particles until only the coarse particles remain
B. interestingly shaped stones where the side exposed to the wind is pitted, but the other side is “fresh,” unless the wind came from many different directions
C. a streamlined, wind-sculpted ridge oriented parallel to the prevailing wind
D. shallow depression caused by removal of loose material in local spots
E. the lifting and removal of loose material over a large area, lowering the surface elevation progressively
 [Hint]
 

3. Which of the following would probably NOT affect the size and depth of a “blowout” in a desert?  

4. In the photograph, the desert floor is a flat plain of relatively angular blocks. What the term for this type of feature, and what type of wind erosion has formed it?
desert_floor_corel_shad.jpg  

5. Which of the following best describes the formation of “desert pavement”?  

Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
 




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