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Water Quality
Test Description: 6.9
Instructions: Answer all questions to get your test result.
1) What causes sediment from construction sites to get in rivers and streams?
A
weathering and erosion
B
high ph
C
eutrophiciation
D
nitrates
2) Sewage from our homes goes to
A
storm drain
B
a reservoir
C
the ocean
D
water treatment plant
3) Which instrument is used to measure water clarity?
A
hydrometer
B
secchi disk
C
thermometer
D
pH strip
4) Amount of dissolved salt in water is called
A
salinity
B
algae
C
pesticides
D
turbidity
5) The health of an ecosystem is directly related to
A
water quality
B
plants
C
sludge
D
animals
6) Which is NOT a way to test water quality?
A
humidity
B
salinity
C
pH
D
dissolved oxygen
7) Excessive nutrients cause
A
high dissolved oxygen
B
lower temperatures
C
low dissolved oxygen
D
high temperatures
8) What is a safe pH for aquatic life?
A
10-14
B
4-5
C
6-9
D
1-3
9) Oxygen in the water comes from the atmosphere and
A
teenage mutant ninja turtles
B
fish breathing
C
animals
D
plants
10) In an excellent stream there would be a high number of
A
macroinvertebrates
B
salinity
C
turbidity
D
dissolved oxygen
*select an answer for all questions
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