Exam 16: Weathering and Mass Movement

Which is a form of mass movement?

A __________ is a rapid downslope movement of a mixture of rocks, soil, and vegetation.

Mount Rushmore must be continually protected from the effects of weathering.

In terms of geologic time, do you think that landforms resulting from differential weathering, such as natural arches and hoodoos, are short-lived or permanent features? Explain.

A surface composed of deeply weathered bare limestone is called __________.

Physical weathering and chemical weathering are the same.

The angle of repose of soil particles results from the equilibrium between gravity and friction.

Cave formations that grow from the floor upward are called __________.

Calcium carbonate mineral accumulations in limestone caverns are called __________.

During __________, water is absorbed into the structure of the rock, causing it to expand and weaken.

__________ is a general term for the rapid movement of rock or debris down a steep slope.

A burrowing gopher breaking rocks into smaller fragments is an example of __________.

A rapid downslope movement of rocks and broken rock fragments is called a __________.

-Referring to Figure 16.30B, the 1999 Vargas, Venezuela, mass wasting event caused __________ deaths.

Sinkhole lakes indicate the level of the water table.

__________ may form where weak vertical joints focus the dissolution of karst weathering along vertical planes.

-Referring to Figure 16.30B, most of the recent major deadly landslides were triggered by what?

Contrast stalactites, stalagmites, and limestone columns.How does each form?

A fast-flowing slurry of mud mixed with large objects, such as rocks and vegetation, is called a __________.

Clay absorbing water and softening is an example of __________.