Science 9 # 6: Mass Wasting Definition

Which of the following types of mass wasting is described as the movement of a water-laden mass of loose mud, sand, soil, rock, and debris down a slope?

• Mudflow
• Debris flow
• Soil creep
• Rockslide

Which of the following terms is used to describe the resistive forces of the mountain, including the cohesive strength and internal friction between the materials?

• Frictional Resistance
• Cohesive Force
• Material Tension
• Shear Strength

Which of the following is TRUE concerning mass wasting?

• It is the large movement of rock, soil, and debris downward due to the force of gravity.

• Mass wasting is not influenced by gravity
• Mass wasting is caused by wind erosion
• Mass wasting only occurs in flat areas

Which of the following is a type of mass wasting that involves the sliding of coherent rock material along a curved surface?

• Slump

• Creep
• Rock avalanche
• Rockfall

Why is decreased vegetation a factor that can cause mass wasting?

• Vegetation stabilizes soil at the surface, and their roots anchor soil under the surface.

• Decreased vegetation attracts more wildlife, causing disturbances that trigger mass wasting.
• Increased vegetation absorbs excess water, leading to soil saturation and instability.
• Vegetation has no impact on soil stability or erosion processes.