1. When individual rock fragments fall through the air and accumulate at the bas

Question

1. When individual rock fragments fall through the air and accumulate at the base of a cliff, that process is referred to as: a. Slump b. Earthflow c. Rock fall d. Avalanche

2. A mudflow can also be referred to as a debris flow. a. True b. False

3. Which of the mass movements listed below is the fastest? a. Mudflows b. Soil creep c. Avalanche d. Earthflow

4. Only a tiny fraction of Earth’s water is drinkable by humans. a. True b. False

5. Most of the fresh drinking water that is easily accessible by most of humanity comes from: a. Streams b. Groundwater c. Glaciers d. Oceans

Explanation / Answer

Answer 1: Rock fall. Rockfalls can happen when rock fragments go through stress and weathering, causing rock bodies to roll, bounce and topple downwards

Since the fallen content consist of rock fragments and not a mass, it will not be a slump. Earthflow requires a heavily percolated land area that is filled with water which causes the wastage.

Answer 2: True. Debris flow is actually a broader term which includes mud, weathered rocks, water and soil that can no longer hold its weight and hence travels down under the force of gravity.

Please post other questions separately.

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