Chapter 11

Question 1

Impermeable

Answer 1

Clay or granite

Question 2

Most productive aquifer

Answer 2

Sandstone, limestone, layers of sand and gravel

Question 3

Major uses of Water

Answer 3

Residential
Agricultural
Industrial

Question 4

Most fresh water

Answer 4

Used to irrigate crops

Question 5

% used for household activities (drinking and washing)

Answer 5

8

Question 6

Average person uses ___ volume of water daily

Answer 6

300 L/ 80 gal

Question 7

India: average daily water use

Answer 7

41L

Question 8

Water treatment removes these elements which are poisonous even in low concentration and can occur naturally

Answer 8

Mercury
Lead
Arsenic

Question 9

Common pathogens

Answer 9

Bacteria
Viruses
Protozoa
Parasitic worms

Question 10

Drinking- Water Treatment

Answer 10

1. First filtration
2. Coagulation (flocs)
3. Second filtration
4. Chlorination
5. Aeration
6. Additional treatment

Question 11

Wastewater Treatment Process

Answer 11

Primary Treatment
1. Filtration
2. First Settling Tank
Secondary Treatment
3. Aeration Tank
4. Second Settling Tank
5. Chlorination

Question 12

Water uses

Answer 12

Manufacture goods
Dispose of water
Generate power

Question 13

Water to produce 1 kg of aluminum

Answer 13

Nearly 1000L

Question 14

Water used to manufacture a car

Answer 14

Almost 500000 L

Question 15

Water needed to produce one ear of corn

Answer 15

300 L/ 80 gal

Question 16

Aqueducts were built by the Romans how many years ago

Answer 16

Nearly 2000 years ago

Question 17

% of world’s electrical energy generated by hydroelectric dams

Answer 17

20%

Question 18

Xeriscaping

Answer 18

A technique used to save water by designing a landscape that requires minimal water use.

Question 19

Two underlying causes of water pollution

Answer 19

Industrialization

Rapid human population growth

Question 20

Seven sources of non-point pollution

Answer 20

1. Chemicals added to road surfaces
2. Water runoff from city and suburban streets
3. Pesticides, herbicides, fertilizers
4. Feces and agricultural chemicals
5. Precipitation containing air pollutants
6. Soil runoff
7. Oil and gasoline from personal watercraft

Question 21

Common groundwater pollutants

Answer 21

Pesticides
Herbicides
Chemical fertilizers
Petroleum

Question 22

Amount of oil spilled yearly from tanker accidents into the ocean

Answer 22

37 million gallons

Question 23

Cuyahoga River

Answer 23

1969, in Cleveland, Ohio was so polluted that the river caught on fire and burned for several days

Question 24

Colorado River

Answer 24

Water is diverted for irrigation and drinking water for states such as AZ, UT, CA to the point that the river often runs dry before it reaches Mexico and the Gulf of California.

Question 25

Permeable

Answer 25

Gravel