Problem 14
What is the angle of repose? Why is the angle of repose different for different types of materials?
Problem 15
How does vegetation affect slope stability?
Problem 16
Why is mass wasting common in deserts and semiarid lands?
Problem 18
How do earthquakes cause landslides?
Problem 20
Compare and contrast creep and slump. What does a pistol-butt tree trunk tell you about slope stability?
Problem 21
Explain how trees are tilted but not killed by slump.
