Unit Test — Unit test Answers

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Which statement describes one event that happens at deep-ocean trenches?

A
Crust is formed.
B
Mountains are formed.
C
Seafloor spreading occurs.
D
Denser plates slide under lighter plates.
2
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What does the presence of new rock near an oceanic ridge indicate?

A
There is always a deep-sea trench underneath.
B
There is evidence of seafloor spreading.
C
They are made from oceanic crust.
D
They have iron oriented in different directions.
3

Which feature of Earth is created at mid-ocean ridges?

A
new island chain
B
new underwater caves
C
new continents
D
new ocean floor
4

Which is one piece of evidence of seafloor spreading?

A
fossil material
B
continent material
C
drilled core samples
D
ocean water samples

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