Unit Test — Unit test Answers

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1
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The image shows a volcanic eruption.

Question illustration
A
This eruption is quiet.
B
This eruption is explosive.
C
This eruption was caused by low-viscosity magma.
D
This eruption may set its surroundings on fire.
3

Which statement describes the location of an earthquake’s epicenter?

A
It is located using a single set of data.
B
It is determined by the Mercalli Scale.
C
It is determined by the arrival time of surface waves.
D
It is located at the point directly above the focus
6

Which statement describes divergent boundaries?

D
Divergent boundaries are found only on land.
S
Subduction occurs at divergent boundaries.
P
Plates move toward each other at divergent boundaries.
M
Magma flows from cracks in the crust at divergent boundaries.
7

Which statement describes one aspect of an earthquake’s magnitude?

A
It is measured by the Mercalli scale.
B
It is based on the size of seismic waves.
C
It is not usually affected by the amount of fault movement.
D
It is used to determine damage caused by earthquakes.
8

The image shows a type of fault.

Question illustration
A
compression
B
gravity
C
tension
D
shearing
11

Where does compression often occur?

A
along a normal fault
B
along a strike-slip fault
C
at a divergent boundary
D
at a convergent boundary
12

What type of stress occurs when plates move apart?

A
compression
B
faulting
C
shearing
D
tension

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