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