EARTH: AN INTRODUCTION TO PHYSICAL GEOLOGY

Chapter 15: Mass Wasting: The Work of Gravity

Concept #2 Quiz

Choose the best possible answer to the following questions about Key Concept 2 "Triggers of mass wasting."

landslide_Stella_WA_USGS_lshad.jpg

1. Which of the following is NOT considered a “trigger” of mass wasting? [Hint]

2.

Match the following trigger of mass wasting with the appropriate description:  

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

A. increases the gravitational instability of materials
B. reduction of internal friction in materials due to lubrication
C. produce ground shaking
D. it can remove stability of slopes due to destruction of plants
E. its absence removes underground binding of soil and regolith
 [Hint]
 

3. Which of the following is NOT a way in which water may trigger or cause mass wasting?  

4. How do strength and cohesion of clay-rich regolith or soil change with the addition of water?  

5.

Match the trigger of mass wasting with the situation in which it most likely occurs: [Hint]

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

A. a hurricane occurring over steep slopes of unconsolidated soil
B. a stream or waves undercutting a valley or cliff wall
C. in locations where forest removal has destroyed the binding of soil
D. in dry areas where forest is found on steeper slopes
E. all of these
 [Hint]
 

6. Which of the following best describes “angle of repose,” and what is its significance to mass wasting?  

7. Which of the following does the “angle of repose” depend upon for a given material? Choose the two that apply. [Hint]

8. Which of the following materials has the maximum sustainable slope angle, as determined by the angle of repose?  

9. What is “liquefaction,” and why is it a major cause of property damage, potentially?  

10. How might an event of mass wasting occur without a triggering cause?  

Some questions in this exercise may have more than one correct answer. And answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
 




Copyright © 2005 by Prentice Hall, Inc. A Pearson Company Legal Notice