Earthquakes — Unit test Answers

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3

Which phrase describes a volcano that is not expected to erupt again?

A
quiet volcano
B
extinct volcano
C
dormant volcano
D
explosive volcano
4

The image shows the locations of volcanoes around the world.

Question illustration
A
Many volcanoes are on the eastern coast of Asia.
B
Most volcanoes are in the center of continents.
C
No volcanoes are found in the middle of the ocean.
D
Many volcanoes are on the eastern coasts of North and South America.
6

Which feature forms at a divergent boundary?

A
rift valley
B
island arc
C
subduction zone
D
collision zone
7

Which statement describes convergent boundaries?

A
Rifts form.
B
Subduction occurs.
C
Plates push away from each other.
D
Mid-ocean ridges mark locations.
8

Which event causes a volcanic eruption?

A
magma turning into lava
B
water being heated by magma
C
explosions occurring in magma chambers
D
magma cutting through older rocks
9

The image shows a volcano erupting at night in Russia.

Question illustration
A
Explosive eruption—beware of ash!
B
Gases push out magma with great force!
C
Volcano quietly erupts due to low-viscosity magma!
D
High silica content of magma results in lava reaching sea level by morning!
10

Which phrase describes a lava plateau?

A
steep-sided mountain
B
gently sloping mountain
C
hardened magma in a pipe
D
volcanic material in valleys

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