Exam 18: The Work of Winds and Deserts

Besides the fact that they were formed by wind, what else can dunes preserved in the rocks tell us?

Sand dunes result when

During the Pleistocene Epoch pluvial lakes occupied the region of Death Valley.

An isolated mountain that rises from the flat plain of a desert is known as a(n)___________ .

Which of the following statements is accurate concerning deserts?

What did the famous twenty-mule teams haul out of Death Valley?

___________dunes form when vegetation cover is broken by deflation and the dune tips point upwind.

In low relief terrain with limited vegetation, abundant sand supply, and a constant wind direction, which of the following dune types will develop?

Surface creep in a desert is a type of mass wasting.

Agriculture and overgrazing on lands adjacent to existing deserts can cause desertification.

What is a playa lake?

Which of the dune types is the most mobile?

In low relief terrain with a partial cover of vegetation, limited sand supply, and a constant wind direction, which of the following dune types will develop?

What is meant by the term "desertification"?

Deserts are expanding through a process called desertification, destroying once productive rangeland and cropland.

What is internal drainage?

How does the process of surface creep occur?

Even if not presently found in desert climates, all dunes originated in desert conditions.

Wind transports sediment in the same way as water - as dissolved load, suspended load, and bed load.

What are yardangs?