All mass movement occurs on slopes. Without gravity, the material would remain in place and not move. True or false.

True

Explanation:

All the mass wasting process is associated with the principle of the gravitational controls and this principle is essential for understanding the process of the formation of the weathering and the soil erosion process and flowage of the material down the slopes of the hills or the mountain etc. As the steeper slopes are more likely to have the mass wasting and as compared to the gentle and more flat slopes. The rock falls, and the slumps and the debris flows are all examples of mass wasting. Thus all the falls, slides, creeps and flows occur due to the gravity of the earth and fluidity of the materials.

True

Explanation:

The mass movements are representing movements of large masses of soil, also including rocks, water, biomass in them. These movements though need certain natural conditions so that they can happen. For a mass movement to occur, there has to be a slope, and under the influence of the gravitation, once the conditions are right, there will be movement downward until it reaches a flatter spot. If the terrain is flat, then a mass movement can not occur, as the gravitation is pulling the material down, so it will not be able to move. Also, if the gravitation is lacking, the material will not move anywhere, as without gravitation, there will be no atmosphere, and without atmosphere, there will be no agents to cause the mass movement.