1. Thermal pollution is defined as.

the warming of an aquatic ecosystem to the point where desirable organisms are adversely affected
the warming of an aquatic ecosystem to the point where undesirable organisms are adversely affected
a process by which temperature and certain environmental conditions create a situation where a body of water separates into distinct masses or units
temperature changes in a body of water that are seasonal

2. The effects of thermal pollution are death due to “thermal shock” and the chronic effect of heat
 

true
false

3. The term “Thermal Stratification” can be defined as.

the warming of an aquatic ecosystem to the point where desirable organisms are adversely affected
a process caused by recreational uses of a lake where a body of water separates into distinct masses or units.
a process by which temperature and certain environmental conditions create a situation where a body of water
        separates into distinct masses or units
none of the above

4. Sources of thermal pollution are.

discharges from coal fired power plants
discharges from nuclear fired power plants
discharges from gas fired power plants
all of the above

5. It has been suggested to control thermal pollution by disposing of the “waste heat” by which of the following methods.

chemically treating lawns and gardens to prevent weeds
discharging cold water into the lake
irrigation and frost protection/soil heating
none of the above

6. When testing a potentially toxic aquatic discharge, an acute toxicity test measures:.

Death of test organisms after a long term exposure.
Reproductive impairment of test organisms after long term exposure
Long term damage to the aquatic environment
Death of a percentage of test organisms in a short period of time- 96 or 48 hrs

7. Chronic toxicity tests are:

Short term and measure death of test organisms
Long term and establish the concentration of a toxicant that will not cause adverse effects
Long term and Include diseases like emphysema
All of the above

8. The Incipient Lethal Level is defined as a level at which no organism can live.
true
false

9. A water quality standard is:.

not enforceable in the state of North Carolina
hard to establish because of varying regulations set by county governments
A specific limitation established by regulations and required by law
A concentration that reasonably assures safety of organisms and potential users

10. Federal Water Pollution Control Act of 1972 required criteria to be determined for many chemicals and users.

These are published in the EPA Redbook.
These are published in the newspaper.
These are unpublished but available upon request from EPA.
These are not available to the general public

Your score out of 100%:

Your answers were: (C = Correct, X = Incorrect)

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