Which factor exerts the greatest control over the velocity of debris flows and the distance they will travel?
A)Debris content
B)Water content
C)Slope angle
D)Vegetation

Question

Quizplus · Accepted Answer

Water content is the greatest factor that controls the velocity of debris flows and the distance they will travel. When water increases the pore pressure, it reduces the friction between the soil particles, which facilitates the movement of the debris flow. Hence, even small amounts of water can drastically increase the speed and distance traveled by debris flows.

Which Factor Exerts the Greatest Control Over the Velocity of Debris