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Hydrosphere
Test Description: Hydrosphere
Instructions: Answer all questions to get your test result.
1) How much of the earth's water is not available for human consumption because it is salt water
A
25%
B
3%
C
97%
D
77%
2) What form is most of earth's freshwater in
A
ground water
B
surface water
C
atmospheric water
D
frozen water
3) How much of earth's freshwater can we actually use?
A
3%
B
1%
C
2%
D
97%
4) Why is the ocean salty
A
organisms in the water
B
Gasses from the atmosphere
C
pollution
D
erosion from the ocean washing over Earth's rocks
5) This type of pollution is too widespread to identify the problem
A
point source pollution
B
nonpoint source pollution
6) Where is most of our drinkable water
A
oceans
B
lakes
C
rivers
D
aquifers
7) This is the process of removing salt from salt water to make it freshwater.
A
that is not possible
B
condensation
C
desalination
D
salt removal
8) What supports life at the bottom of the ocean?
A
hydrothermal vents
B
plants
C
sunlight
9) What is one benefit of estuaries
A
all of the above
B
They are sources of commerical fish
C
they are environmental filters
D
the help reduce erosion and flooding
10) Estuaries are ..
A
a river
B
places were salt water and fresh water meet.
C
a zone of the ocean
11) what zone of the ocean are hydrothermal vents located
A
abyssal
B
benthic
C
intertidal
*select an answer for all questions
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