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Hydrosphere Test Review Part IV
Test Description: HYdrosphere Test Review part IV
Instructions: Answer all questions to get your test result.
1) A clear example of point source pollution is
A
oil spilling from a supertanker
B
feedlot wastes in a river
C
salts from irrigation
D
trash floating in ocean water
2) Which region of the sea is affected by changes in the tides?
A
open ocean and shore
B
open ocean
C
deep ocean
D
shore
3) Under which conditions are large numbers of fish in a lake most likely to die?
A
when the water's dissolved oxygen is high and temperatures are low
B
right after a storm with heavy rainfall
C
when the water's dissolved oxygen is low and temperatures are high
D
when the water's turbidity is low and temperatures are average
4) Why is water from an aquifer more likely to be cleaner than water used from other sources?
A
because it receives water directly from precipitation
B
because pollutants are filtered by rock and soil from deep within the Earth
C
because it rises to the surface near the ocean
D
because it forms where fresh water and salt water meet
5) Which of the following is the main reason why the ocean is salty?
A
Surface water carries salt from land into the ocean.
B
salts dissolve from trash dumped into the ocean
C
salts naturally form from water molecules in the ocean
D
salts are spilled by ships that sail through the ocean
6) A body of water that has high turbidity is
A
acidic
B
clear
C
cloudy
D
basic
7) Which of these is not a threat to living ocean resources?
A
oil spills
B
overfishing
C
pollution
D
evaporation
8) Which describes a non point source of pollution?
A
liquid fertilizer flowing from a barrel into a stream
B
chemical spill in a river next to a manufacturing complex
C
accumulation of oil in a stream next to a gas station
D
runoff from a road into a nearby stream
9) A neutral pH is:
A
8.0
B
2.0
C
7.0
D
4.5
10) For what types of water does the Clean Water Act set water quality standards?
A
ocean waters
B
groundwater
C
surface waters
D
all U.S. waters
*select an answer for all questions
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