1. What is the force behind mass movements?

C. gravity

2. Which of the following is NOT true about mass movements?

B. Mass movements always lead to landslides.

3. Oversteepened slopes often lead to mass movements because _____. (1 point)

D. the angle of their slope is greater than 40 degrees

4. When a block of material moves downslope along a curved surface, the type of mass movement is called _____.

C. a slump

5. A relatively rapid form of mass movement that is most common in dry mountainous regions is _____.

B. a mudflow

6. The average annual precipitation worldwide must equal the quantity of water _____.

A. evaporated

7. The ability of a stream to erode and transport materials depends largely on its ______.

C. velocity

8. The vertical drop of a stream channel over a certain distance is called _____.

C. gradient

3 answers

number 4, I personally have never encountered that term. It may be correct.
others are correct.
All are correct nice job
for those who want to know all their answers are correct.
:3