Which of the following processes involves the downslope movement of rock and debris under the influence of gravity, where the material moves as a viscous or plastic fluid rather than a rigid block?

💡 Solution & Explanation

Earthflow refers to downslope movements of earth materials where water saturation transforms the mass into a viscous or plastic fluid moving downslope. Unlike a rigid rockfall or slump, the internal shear occurs throughout the moving mass without a distinct sliding plane. Soil creep represents an even slower imperceptible surface movement.