Exam 14: Mass Wasting: The Work of Gravity

North of 60° N latitude the permafrost is virtually continuous whereas farther south to about 54° N it is discontinuous and very hard to predict its exact location.

Which mass-wasting event involves movement on a zone of compressed air?

What two geologic factors prepared Turtle Mountain or made it prone to slides like that of April 29, 1903?

Thermokarst topography is produced by hot springs dissolving limestone terrain.

The steepest, stable, slope angle possible in unconsolidated, granular materials like sand and gravel is called the angle of retention.

Why is water saturation of slope materials a bad thing?

How do freezing, thawing, wetting, and drying contribute to soil creep?

What are the four major factors that serve to weaken slope materials and prepare them for mass wasting?

Repeated freezing and thawing can be important in soil creep movements.

Which natural factors routinely weaken slope materials and make them more prone to mass wasting and failure?

What is the basic force that moves or accelerates soil, regolith, or rock down a slope?

Which one of the following operates primarily in areas of permafrost?

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

In the diagram below, match the letter of each illustration to the correct form of mass wasting. a)debris flow b)slump c)earthflow d)rockslide

All of the following are possible indicators that creep is occurring except for ________.

Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

How much of Canada is underlain by permafrost?

Why are oil pipelines difficult to engineer north of 60° latitude?

What are the main physical conditions that cause mass wasting?