Chapter 15 Practice Multiple Choice

Chapter 15 Practice Multiple choice At a ______, plates slide past one another as they move in opposite directions.

a. divergent plate boundary

b. convergent plate boundary

c. transform fault

d. subduction zone Which of the following causes physical or mechanical weathering?

a. frost wedging

b. lichen

c. roots

d. carbon dioxide Which of the following classifications of mineral resources describes mineral deposits known to exist in a certain place, quantity, and quality?

a. identified resources

b. reserves

c. undiscovered resources

d. extractable reserves Which of the following is not considered to be a mineral resource?

a. coal

b. sand

c. barium

d. aluminum In the United States, about 90% of the mineral resources are extracted by

a. surface mining.

b. subsurface mining.

c. mountaintop removal.

d. open-pit mining. Which of the following is not a result of extracting, processing, and using mineral resources?

a. large amounts of solid waste

b. soil buildup

c. increase in water pollution

d. disturbance of land The ______depletion time assumes no recycling or reuse of a mineral and no increase in reserves.

a. shortest

b. longest Which of the following is a possible environmental effect of seabed mining?

a. It can affect the salinity of the water in the area being mined.

b. It may change the ocean temperature.

c. It can stir up ocean sediments.

d. It will affect migrating patterns of whales. Some analysts believe that even if supplies of key minerals become too expensive or scarce from unsustainable use, human ingenuity will find

a. new technologies for mining and extraction.

b. better methods of recycling minerals. c. substitutes for scarce minerals.

d. new deposits of scarce minerals. Answers C A A C A B A C C