WorksheetsVolcanoes
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
Volcanic belts form along
a)
islands in the Pacific Ocean
b)
North American mountain ranges
c)
the boundaries of Earth's plates
d)
the coast of Antarctica
2.
The formation of the Hawaiian Islands is one example of
a)
volcanoes forming over a hot spot
b)
volcanoes forming along a plate boundary
c)
the Ring of Fire
d)
continental drift
3.
Liquid magma flows upward through cracks in rock because it is
a)
highly fluid
b)
less dense than the surrounding solid material
c)
highly magnetic
d)
more dense than the surrounding solid material
4.
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
5.
If a volcano's magma is high in silicia, the volcano will probably
a)
erupt quietly
b)
remain dormant
c)
erupt explosively
d)
produce dark color lava
6.
Pahoehoe is
a)
cooler, slower moving lava
b)
fast moving lava
c)
volcanic ash
d)
lava with a rough, chunky surface
7.
When groundwater heated by magma rises to the surface and collects in a natural pond, it is called a
a)
hot spring
b)
geyser
c)
vent
d)
pyroclastic flows
8.
In volcanic areas, groundwater heated by magma is a source of
a)
lava flows
b)
silicia
c)
geothermal energy
d)
pyroclastic flows
9.
Which of the following volcano hazards is made up of rocky particles about the size of a grain of sand?
a)
volcanic bombs
b)
pahoehoe
c)
volcanic cinders
d)
volcanic ash
10.
Tall, cone-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
11.
The main hazard from a quiet volcanic eruption is
a)
volcanic bombs
b)
lava flows
c)
volcanic cinders
d)
volcanic ash
12.
When magma squeezes between layers of rock, it forms a
a)
neck
b)
dike
c)
lava plateau
d)
dome mountain
13.
When many layers of thin, runny lava build up a high, level area, the result is a
a)
lava plateau
b)
shield volcano
c)
cinder cone volcano
d)
composite volcano
14.
Because Mercury and Mars are smaller than Earth and their cores have cooled, scientists think that
a)
the volcanic activtiy on these planets has just begun
b)
the volcanic activity on these planets has ended
c)
there never was volcanic activity on these planets
d)
the volcanoes on these planets are smaller and cooler than those on Earth
15.
What is the landform that forms when rising magma, blocked by layers of rock, forces the layers of rock to bend upward?
a)
volcanic neck
b)
dike
c)
lava plateau
d)
dome mountain
16.
Which planet has shield volcanoes and lava flows similiar to those on Earth?
a)
Jupiter
b)
Venus
c)
Mercury
d)
Neptune
17.
Besides Earth, what are two other bodies in the solar system where volcanic eruptions have been observed?
a)
Io, a moon of Jupiter, and Triton , a moon of Neptune
b)
Mars and Venus
c)
Earth's moon and Venus
d)
Saturn and Uranus
18.
The eruptions on Neptune's moon Triton involve
a)
molten lava similar to Earth's volcanoes
b)
sulfur
c)
liquid nitrogen
d)
salt water
19.
Before lava reaches the surface it is called
a)
rock
b)
magma
c)
volcanic ash
d)
liquid fire
20.
The volcanoes along converging oceanic plate boundaries may form
a)
a hot spot
b)
a part of the mid-ocean ridge
c)
an island arc
d)
a subducting plate
21.
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
22.
A volcano that may erupt again at some time in the distant future is
a)
active
b)
dormant
c)
explosive
d)
extinct
23.
The huge hole left by the collapse of a volcanic mountain is called a
a)
lava plateau
b)
caldera
c)
cinder cone
d)
shield volcano
24.
If geologists detect many small earthquakes in the area near a volcano, what can they infer about the volcano?
a)
It is dormant
b)
It is probably about to erupt
c)
It is extinct
d)
It is a good source of geothermal energy
25.
The smooth surfaces on Earth's moon that are visible from Earth are
a)
oceans
b)
craters where meteors smashed into the moon
c)
areas where lava flowed more than three billion years ago
d)
mountain ranges
26.
When ash, cinders, and bombs build up in a steep pile around a volcano's vent, the result is a
a)
cinder cone volcano
b)
shield volcano
c)
composite volcano
d)
dormant volcano
27.
When magma hardens in a volcano's pipe, the result will eventually be a landform called a
a)
batholith
b)
dike
c)
volcanic neck
d)
sill
28.
Magma that forces across rock layers hardens into a
a)
sill
b)
volcanic neck
c)
dike
d)
batholith
29.
What provides the force that causes magma to erupt to the surface?
a)
the silica in the magma
b)
dissolved gases trapped in the magma
c)
gravity in the lithosphere
d)
the density of the magma
30.
Which of the following helps to determine how easily magma flows?
a)
the amount of silica in the magma
b)
the diameter of the pipe
c)
the size of the crater
d)
the number of vents on the volcano
100 %
