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WorksheetsWater Pollutant practice!
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
A source of pathogens
a)
dysentery
b)
diarrhea
c)
sewage treatment plant
d)
shcistosomiasis
2.
A source of lead
a)
old pipes
b)
lower IQ
c)
inorganic chemicals
d)
Lake Houston
3.
These are all examples of organic chemical water pollution:
a)
gasoline; pesticides; dioxins
b)
plastics; mercury; uranium
c)
radium; solvents; lead
d)
bacteria; heat; gasoline
4.
These are likely to biomagnify through the food chain.
a)
organic chemicals like pesticides
b)
lead and mercury
c)
plant nutrients
d)
heat
5.
Yards can be sources for
a)
pesticides; plant nutrients and sediment
b)
uranium; dioxins; pathogens
c)
acids; lead; plastics
d)
sediment; cholera; solvents
6.
Sewage treatment plants can be sources for all of the following EXCEPT
a)
plant nutrients
b)
heat
c)
infectious agents
d)
pharmaceuticals
7.
A likely source for radioactive materials would be
a)
medical research facilities
b)
landfills
c)
cancer
d)
acids
8.
Examples of materials that contain plant nutrients are
a)
sewage and fertilizers
b)
inorganic and organic chemicals
c)
radioactive materials and heat
d)
pesticides and infectious agents
9.
Eutrophication is caused by
a)
plant nutrients
b)
inorganic chemicals
c)
organic chemicals
d)
sediment
10.
Eutrophication results in
a)
lower dissolved oxygen (DO)
b)
sewage
c)
cancer
d)
lower IQ
11.
Two pollutants that lower dissolved oxygen are
a)
heat and plant nutrients
b)
radioactive and organic chemicals
c)
infectious wastes and sediment
d)
fertilizer and inorganic chemicals
12.
A source of sediment is
a)
construction sites
b)
reduced photosynthesis
c)
lower dissolved oxygen (DO)
d)
heat
13.
If Biological Oxygen Demand is high, then DO will
a)
decrease
b)
increase
c)
be produced
d)
be constant
14.
In the oxygen sag curve, aquatic plants produce DO
a)
through all the zones
b)
only in the clean zones
c)
mostly in the septic zone
d)
only in the decomposition zone
15.
BOD is like _______ and DO is like _______
a)
demand; supply
b)
supply; demand
c)
good; evil
d)
night; day
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