Ch 22 Water Pollution& Treatment

Front 1

Groundwater pollution is often difficult to treat because the pool is usually ___ and the rate of throughput is usually __

Back 1

large; slow

Front 2

The amount of the nutrients, phosphorus and nitrogen, in groundwater is usually:

Back 2

greater in agricultural regions than in natural forests

Front 3

In general, the largest point sources of thermal water pollution are

Back 3

electrical generating plants

Front 4

You are a scientist monitoring disease potential of wastewater treated at a sewage treatment plant. You are most concerned with the concentration of which of the following

Back 4

fecal coliform bacteria

Front 5

What does B.O.D. stand for?

Back 5

Biochemical Oxygen Demand

Front 6

Which of the following is not associated with eutrophication?
A. algal blooms
B. increased concentration of toxins
C. reduced photosynthesis in the water column
D. increased nutrient concentrations
E. reduced dissolved oxygen

Back 6

b

Front 7

Fecal coliform bacteria are

Back 7

harmless organisms used to trace infectious pathogens

Front 8

Wastewater added to commercial fish ponds causes an increase in fish yield because organic waste

Back 8

increases the supply of food available

Front 9

TF:Water pollution is best defined as the degradation of water quality

Back 9

true

Front 10

TF:Groundwater is the most easily accessible supply of fresh water

Back 10

false

Front 11

TF:When nitrogen and phosphorus are added to a body of water, they alter the natural conditions because they are necessary nutrients, usually scarce in nature

Back 11

true

Front 12

On a weight basis, the most abundant water pollutant is sediment

Back 12

true

Front 13

A septic tank in rural households can be considered to be a private sewage treatment plant because it treats the household

Back 13

wastewater

Front 14

Water that has a high concentration of sulfuric acid that drains from mines is called

Back 14

acid mine drainage

Front 15

The two important nutrients that cause water pollution problems are and .

Back 15

phosphorus; nitrogen

Front 16

Of the following areas: agricultural, forested, rural, suburban and urban; the highest concentration of nitrogen is found in

Back 16

agriculture

Front 17

Rivers draining agricultural land or land that is being urbanized can quickly fill with sediment. This has the effect of (increasing/decreasing) the magnitude and (increasing/decreasing) the frequency of flooding

Back 17

increasing; increasing

Front 18

The process by which a body of water develops a high concentration of nutrients is called

Back 18

eutrophication

Front 19

Runoff from city streets is an example of an urban (point/nonpoint) source of water pollution

Back 19

nonpoint