Question

question 1 of 20 : select the best answer for the question. 1. which of these mass movement events is considered a slide? a. rock fall b. rock avalanche c. slump d. creep

Explanation:

To determine which mass movement event is a slide, we analyze each option:

• Option A (Rock fall): Involves free - falling of rocks, not a slide.
• Option B (Rock avalanche): Is a rapid flow of rock debris, more like a flow than a slide.
• Option C (Slump): Occurs when a mass of rock or soil moves down - slope along a curved surface, which is characteristic of a slide (a type of mass movement where material moves along a distinct surface).
• Option D (Creep): Is a very slow, gradual movement of soil or rock down - slope, not a slide.

Answer:

C. Slump