The sudden movement of rock and soil down a slope.

The sudden movement of rock and soil down a slope.

• A. Landslide
• B. Slump
• C. Creep
• D. Mass Wasting

Answer: (A)

The question tests understanding of rapid downslope movement caused by gravity. A landslide is a sudden, rapid movement of rock and soil down a slope, often triggered by instability from rain, shaking, or other factors. This makes it the best match for the description. Creep is the opposite—measurably slow, gradual downslope movement of soil. A slump is a specific rapid movement along a curved slip surface, which is a kind of landslide but typically described as a slower, more localized event with a distinct toe. Mass wasting is the broad umbrella term for all downslope movement by gravity, including landslides, slumps, creeps, and more.

The question tests understanding of rapid downslope movement caused by gravity. A landslide is a sudden, rapid movement of rock and soil down a slope, often triggered by instability from rain, shaking, or other factors. This makes it the best match for the description.

Creep is the opposite—measurably slow, gradual downslope movement of soil. A slump is a specific rapid movement along a curved slip surface, which is a kind of landslide but typically described as a slower, more localized event with a distinct toe. Mass wasting is the broad umbrella term for all downslope movement by gravity, including landslides, slumps, creeps, and more.