earth science help work help please?

ashley k

New member
1. What is the force behind mass movements?

*the sun's energy
*flowing water
*gravity
*moving ice

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

*Some mass movements are too slow to be seen.
*Mass movements always lead to landslides.
*Gravity is the driving force behind all mass movements.
*Mass movements are always downslope.

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

*plants cannot grow on them
*the angle of their slope is between 10 and 20 degrees
*the angle of their slope is less than 20 degrees
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 _____.

*a rockfall
*a rockslide
*a slump
*creep

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

*creep
*a mudflow
*a slump
*an earthflow

6. The average annual precipitation worldwide must equal the quantity of water _____.
*evaporated
*transpired
*infiltrated
*locked in glaciers

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

*width
*length
*velocity
*density

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

*discharge
*channel roughness
*gradient
*runoff
 
Gravity

Mass movements always lead to landslides

the angle of their slope is less than 20 degrees

rockslide

a mudflow

evaporated

velocity

runoff
 
error

Actually no the correct answers are
1. Gravity
2. Mass movement always leads to landslides
3. The angle of their slope is greater than 40 degrees
4. A slump
5. A mud flow
6. Evaporated
7. Velocity
8. Gradient
 
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