The process by which metamorphic rock changes to igneous rock begins with a. melting. b. erosion. c. deposition. d. crystallization.

Rates of erosion of American Falls have been recorded as 23/100 meter per year for 33 years, 9/40 meter per year for 48 years, and 1/5 meter per year for 4 years. What is the total amount of erosion during these three time spans?

What could cause a canyon to be deeper upstream than downstream?

A. the area upstream could be uplifted more than areas downstream

B. the area upstream is higher above base level and so results in deep erosion

C. a steeper gradient allows more erosion upstream

D. all of these

By what process is the carbon in fossil fuel released into the atmosphere? A. combustion B. decomposition C. erosion D. respiration

Ozone depletion has been caused by A. soil erosion. B. CFCs. C. aquaculture. D. all of the above.

Write About It Identify how a model of the erosion cycle illustrates processes that build up and tear down Earth's surface.

Regional elevation can be decreased by:

A. normal faulting that thins the crust

B. erosion

C. cooling of the crust

D. all of these

Match the phrase with the correct term from the Study Guide. a boundary representing a period of erosion or nondeposition

Suppose you have 3 mats, 24 strips, and 13 units, for a total count of 553. Briefly describe the exchanges you would make to keep the same total count but have the smallest possible number of manipulative pieces.

Arrange the terms below in the correct order to describe the formation of clastic sedimentary rocks: transportation, cementation, deposition, erosion.

Which of the following would NOT be a major process in the formation of sedimentary rocks? a. erosion b. melting c. deposition d. compaction

Apply Concepts Under what conditions would you expect abrasion to cause the most erosion on a beach?

The process that breaks down rock and other substances is called

a. sediment.

b. deposition.

c. erosion.

d. weathering.

Which of the following helps form cirques and U-shaped valleys? A) rill erosion B) ice wedging C) deflation D) till