Unit Test — Unit test Answers

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21
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The image shows groundwater zones.

Question illustration
A
1
B
2
C
3
D
4
22
Free Preview

The image shows groundwater zones.

Question illustration
A
1
B
2
C
3
D
4
23

What happens when water’s salinity increases?

A
Mass decreases.
B
Freezing point decreases.
C
Buoyancy of objects decreases.
D
The amount of dissolved minerals decreases.
24

How do icebergs form?

A
They form when seawater freezes.
B
They form when groundwater freezes.
C
They break off from the coast of Iceland.
D
They break off large ice sheets found at the poles.
25

A scientist observes hot water erupting from a vent in the Earth. What most likely caused the water to rise and erupt from the vent?

A
The vent was lower than the water table.
B
A well was drilled into a pressurized aquifer.
C
A well with a mechanical pump was installed.
D
The water was heated by magma or hot rocks.

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