Exam 15: Mass Wasting

A stream is flowing over a hill covered in thick soil.The stream is eventually blocked to create a small pond in order to free land downhill for construction.What will ultimately happen to the strength and cohesion of the soil in the area around this pond?

Identify the mass-wasting event in this image.

________ is the downslope movement of rock, regolith, or soil under the direct influence of gravity.

Thick deposits of soil over bedrock are more stable than thin deposits over bedrock.

Creep is a slow type of mass wasting that moves at a rate of a few centimeters per year.

Which mass wasting process involved volcanically derived material from the eruption of Nevado del Ruiz and destroyed the city of Armero in 1985?

Which of the following scenarios would lead to a mass wasting event due to an oversteepened slope?

Creep is the most widespread mass-wasting process.

Compare and contrast earthflows and debris flows.

How did the debris from the Gros Ventre Landslide of 1925 lead to another disaster in the same region in 1927?

A piece of gravel is resting on a slope.Which of the following best describes how the gravitational force pulling the gravel downward will vary with the inclination of the slope?

The creation of which sedimentary feature is controlled in part by debris flows exiting a narrow canyon?

Which rapid form of mass wasting is found at the base of slump blocks?

Which sediment size has the steepest angle of repose?

A ________ slide is a type of mass wasting process where a mass of material moves along relatively flat surfaces such as joints, faults or bedding planes.

Which slope composition is the most stable?

Solifluction occurs during the warmer months of the melt season.

In what climate(s)is solifluction prevalent?

What role does fire play in making mass wasting more severe during subsequent rains?

What are three examples of preexisting slip planes for translational slides?