Volcanoes
1. Volcanic Belts form along
A.
B.
C.
D.
islands in the Pacific Ocean
North American mountain ranges
The boundaries of Earth’s plates
The coast of Antarctica
2. Liquid magma flows upward through cracks in a
rock or volcano because
A.
B.
C.
D.
It is highly fluid
Less dense than the surrounding material
Highly magnetic
More dense than surrounding solid material
3. The long tube in the ground that connects the
magma chamber to Earth’s surface is called the
A.
vent
B.
side vent
C.
pipe
D.
crater
4. Pahoehoe is
A.
cooler, slower moving lava
B.
C.
D.
fast moving hot lava
volcanic ash
lava with a rough chunky surface
5. The main hazard from a quiet volcanic eruption
is
A.
B.
C.
D.
Volcanic gases
Lava flows
Geysers
Pyroclastic flow
6. Tall, pointy –shaped mountains in which layers
of lava alternate with layers of ash are called
A.
shield volcanoes
B.
cinder cone volcanoes
C.
composite volcanoes
D.
lava plateaus
7. When magma squeezes between layers of rock, it
forms a
A.
neck
B.
dike
C.
sill
D.
lava plateau
8. Because Mercury and Mars are smaller than
Earth and their cores have cooled, scientists
think
A.
The volcanic activity has just begun
B.
The volcanic activity on these planets has
ended
C.
There was never any volcanic activity
D.
The volcanoes on these planets are smaller
and cooler
9. Which planet has shield volcanoes and lava
flows similar to Earth’s?
A.
B.
C.
D.
Jupiter
Venus
Mercury
Neptune
10. Besides Earth what are two other bodies in
the solar system where volcanic eruptions have
been observed?
A.
B.
C.
D.
Io and Triton
Mars and Venus
Earth’s moon and Venus
Saturn and Uranus
11. The eruptions on Neptune’s moon Triton
involve
A.
B.
C.
D.
molten lava
Gases
Salt Water
Mercury
12. Before lava reaches the surface it is called
A.
B.
C.
D.
rock
magma
volcanic ash
liquid fire
13. A mass of rock formed when a large body of
magma cools inside the crust is called a
A. neck
B. dike
C. lava plateau
D. batholith
14. A volcano that may erupt again at some time in
the distant future is
A. active
B. dormant
C. explosive
D. extinct
15. The huge hole left by the collapse of a volcano is
called
A. Lava plateau
B. caldera
C. Cinder Cone
D. Shield volcano
16. If geologist detect many small earthquakes in the
area of a volcano what can they infer?
A. It is dormant
B. It is probably about to erupt
C. It is extinct
D. It is a source of geothermal energy
17. The smooth surfaces from Earth’s moon were
cause by
A. Oceans
B. Craters where meteors hit
C. lava flows
D. mountain ranges
18. When ash cinders and bombs build up around a
volcanoes vent the result is
A. a cinder cone volcano
B. Shield volcano
C. Composite volcano
D. Dormant volcano
19. Magma that forces across rock layers hardens into
a
A. sill
B. volcanic neck
C. dike
D. batholith
20. What provides the force that cause magma to
erupt
A. The silica in the magma
B. Dissolved gases
C. Gravity in the lithosphere
D. The density of the magma