Ch 11 Study Guide 2

9. Ninety-seven percent of the world’s water resources are found in

• a. fresh water.

• b. salt water.

• c. icecaps and glaciers.

• d. groundwater.

10. Earth’s surface water is found in

• a. lakes.

• b. rivers.

• c. streams.

• d. All of the above

11. Most of the oil that pollutes the ocean comes from

• a. operating boats and personal watercraft.

• b. spills from oil tankers.

• c. runoff from cities and towns.

• d. leaking underground storage facilities.

12. The three major global uses of fresh water are

• a. manufacturing goods, wastewater disposal, and irrigation.

• b. drinking, bathing, and growing crops.

• c. drinking, manufacturing goods, and generating power.

• d. residential, agricultural, and industrial uses.

13. What is the purpose of adding alum to water during the water treatment process?

• a. to filter and remove large organisms and trash

• b. to form flocs that bacteria and other impurities will cling to

• c. to prevent bacterial growth

• d. to remove unwanted gases

14. How is fresh water used in industry?

• a. in manufacturing processes

• b. in the disposal of waste products

• c. to generate power

• d. all of the above

15. Many areas of the world that do not have adequate fresh water have become habitable because

• a. rainfall patterns have changed.

• b. water management projects have diverted water to the areas.

• c. icebergs have been towed in to provide fresh water.

• d. people have practiced water conservation.

16. A hole that is dug into the ground to obtain fresh water is called

• a. the recharge zone.

• b. a well.

• c. an aquifer.

• d. a watershed.

17. Which of the following is one way that a person can conserve water?

• a. Take a bath instead of a shower.

• b. Wash laundry in small, partial loads.

• c. Use a low-flow shower head and take short showers.

• d. Water the lawn daily and at mid-day.

18. Which of the following is a source of pointpollution?

• a. unlined landfill

• b. runoff from city streets

• c. precipitation containing air pollution

• d. runoff from farms