Question

Which of the following statements accurately describes a debris flow?

• A. It is a slow, gradual movement of soil
• B. It involves the free fall of rock or debris
• C. It is a rapid, fluid like movement of a mixture of water, rock, soil and organic debris
• D. It is characterized by the movement of dry unconsolidated material

Answer 1

Answer:

C. It is a rapid, fluid like movement of a mixture of water, rock, soil and organic debris

• A debris flow is best described as a rapidly moving, water-laden mass of loose soil, rock, organic matter (like trees), and air that flows downslope as a viscous slurry.

• It is a rapid, fluid like movement of a mixture of water, rock, soil and organic debris