Unit Test — Unit test Answers

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21
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Which statement describes seismic waves?

A
They carry energy.
B
They move in one direction.
C
They originate from the epicenter.
D
They only vibrate at Earth’s surface.
22
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Which is one type of evidence that geologists usually study?

A
location of Earth in outer space
B
waves that move through Earth
C
interactions between living things on Earth
D
diversity of life found on Earth
23

Which plate forms a boundary with the African Plate?

Question illustration
A
Pacific
B
South American
C
Nazca
D
Philippine
24

The image shows the Great Rift Valley in Africa, an example of a rift valley.

Question illustration
A
The rift valley formed when the crust pulled apart.
B
The rift valley formed due to subduction.
C
The rift valley formed similarly to an island arc.
D
The rift valley formed at a convergent boundary.
25

This image shows a volcanic eruption in Hawaii with lava flowing into the sea.

Question illustration
A
Its magma is high in silica.
B
Its magma has low viscosity.
C
Its gases are released in rapid bursts.
D
Its lava came from an explosive eruption.

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