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WorksheetsPollution and Water Quality Review
Total questions: 35
Worksheet time: 1hrs 15mins
What can the runoff of nutrients cause an overproduction of?
Food
Algae
Fertilizer, sewage, and animal feces can wash in to water, leading to...
thermal pollution
artificial eutrophication
Water pollution that comes from a single source is considered...
point source pollution
nonpoint source pollution
Humans use fresh water primarily for:
mining and industrial process
electrical production
agricultural irrigation
Which would a scientist expect to find in a lake that experienced a sudden increase in nitrate levels?
an increase in temperature
an increased number of fish
an increased amount of algae and aquatic plants
The terms basic and acidity refer to what water quality indicator?
pH
dissolved oxygen
turbidity
pollutants entering waterways from a general area, such as runoff from farmland or suburban communities
Nonpoint Source Pollution
Point Source Pollution
Which best describes a bio-indicator?
A species that has a short life span.
A species that depends on certain conditions to survive.
Which is an effect of chlorine in water?
kills the microorganisms
improves the taste
Which non-point pollutants are most directly linked to agriculture?
oil spills and motor oil
road salt and pet waste
bacteria and excess nutrients
Why is filtration an important part of water treatment?
Filtration guarantees a clear coloring in water.
Filtration removes small particles from the water.
The local middle school has a fish pond in the courtyard. The pond water is suffering from eutrophication. Which most likely caused this problem?
poor filtration
direct sunlight
fertilizer runoff
Which is a bio-indicator?
current
rock
insect
Which term means how clear water is
Acidity
pH
Turbidity
What is the normal pH of water?
3
7
10
Nitrates and phosphates come from fertilizers and human and animal waste. This leads to eutrophication which is the buildup of what?
Plankton
Algae
Which substance is used in a sewage treatment system to kill harmful bacteria?
ammonia
chlorine
If water has e.coli, fecal coliform bacteria, and/or cryptosporidium in it
its ok to drink the water as long as the levels are low
its totally fine to drink the water
the water is not drinkable since these microorganisms make you really sick
Which of the following terms describes a substance that is sprayed on plants or crops to kill bugs?
Pesticide
Eutrophication
Which source of water pollution includes oil and gasoline discharge from automobiles and storm sewer drainage?
Agriculture
Bacteria
Urban runoff
Why were some pesticides, such as DDT, removed from public use?
They can cause heart disease.
They can cause diabetes
They can cause cancer
Examine the trophic level pyramid. This ecosystems has been contaminated with DDT. Where would the highest concentration of DDT be found in this food web?
In the decomposers
In the tertiary consumers
In the producers
What does the stem "agri-" mean?
Farm, farming
Large
Look at, examine
What two elements contribute to the hardness of water?
silver and gold
manganese and sodium
calcium and magnesium
Which of the following water quality indicators would most likely be responsible for the occurrence of a fish kill?
low dissolved oxygen
neutral pH
low turbidity
Why are viruses not removed through the process of water filtration?
Viruses are not in water, and cannot be filtered out.
Viruses are too small to be removed by the filters.
