Water Quality Review: Question Preview (ID: 24916)

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Which best determines the health of a lake used as a source of freshwater?
a) temperature and pH
b) location and depth
c) depth and width
d) temperature and depth

If a body of water has high turbidity levels, what can most likely be concluded?
a) It has a low pH.
b) It is unsafe to drink.
c) It is too hot to drink.
d) It contains a lot of chemicals.

Drinkable water is called ______________.
a) Safe water
b) potable water
c) freshwater
d) stored water

Which factors can have the greatest effect on the health of a river system?
a) type of soil and salinity
b) nitrate levels and turbidity
c) human consumption and pH
d) natural disasters and tidal changes

In the United States, which is responsible for ensuring the safety of the country’s drinking water?
a) Environmental Protection Agency (EPA)
b) Food and Drug Administration (FDA)
c) National Oceanic and Atmospheric Administration (NOAA)
d) Center for Disease Control (CDC)

Why is water from an aquifer more likely to be cleaner than water from other sources?
a) because it forms where fresh and salt water meet
b) because it receives water directly from precipitation
c) because it rises to the surface near the ocean
d) because pollutants are filtered by rock and soil deep within Earth

Warm water ____________________________________.
a) Supports more fish in a river.
b) Dissolves less gas (like oxygen and carbon dioxide).
c) Dissolves less solid substances.
d) does not determine what organisms live there.

Dissolved oxygen _____________________________.
a) is released from photosynthesis by aquatic plants.
b) is breathed out by aquatic organisms.
c) is not used by aquatic organisms
d) makes potable water taste bad.

Pure what has a pH of _____.
a) 7
b) 4.5
c) 12
d) 0

Nitrates are a chemical derived from ____________.
a) nitrogen
b) phosphorus
c) carbon
d) mercury

Which of the following is a measure of how clear water is?
a) turbidity
b) pH
c) nitrates and phosphates
d) temperature

Macroinvertebrate means:
a) an organism large enough to see with a backbone
b) an organism large enough to see without a backbone
c) an organism you need a microscope to see with a backbone
d) an organism you need a microscope to see without a backbone

Macroinvertebrates are also known as ________________.
a) bioindicators
b) fish
c) water testers
d) aquatic pH gauges

Macroinvertebrates that identify a body of water as healthy are considered
a) intolerant
b) tolerant
c) moderately tolerant
d) polluted

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