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WorksheetsVolcanoes!
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
Magma that reaches the surface is called:
a)
Vent
b)
Hot spot
c)
Lava
d)
Cinders
2.
The more silica that magma contains...
a)
the thicker the magma
b)
the thinner the magma
c)
the higher the viscosity
d)
the runnier the magma
3.
The belt of volcanoes around the rim of the Pacific Ocean is called:
a)
Island arc
b)
Ring of Fire
c)
Lava plateau
d)
Hawaii
4.
Shield volcanoes have:
a)
gently sloping sides
b)
a steep cone shape
c)
moderately sized sides
d)
long cracks along plate boundaries
5.
When a volcano erupts, empties the magma chamber, and collapses the top leaving a huge hole.
a)
Dike
b)
Caldera
c)
Silica
d)
Geyser
6.
Explosive eruption that hurls ash, gases, cinders, and bombs from the main vent.
a)
Volcano bomb
b)
Geyser
c)
Geothermal energy
d)
Pyroclastic flow
7.
A chain of volcanic islands formed where two oceanic plates collide is called:
a)
island arc
b)
hot spot
c)
Hawaii
d)
geyser
8.
Inside a volcano, magma collects in a pocket called a:
a)
caldera
b)
pipe
c)
magma chamber
d)
vent
9.
These volcanoes form in long cracks where plates are pulled apart.
a)
Shield volcano
b)
Composite / Stratovolcano
c)
Cinder cone
d)
Fissure volcano
10.
Magma's resistance to flow, or how thick it is, is called:
a)
silica
b)
viscosity
c)
hot spot
d)
caldera
11.
The Hawaiian islands are made from this type of volcano.
a)
Composite
b)
Cinder Cone
c)
Shield
d)
Big
12.
Which is NOT a property of magma from an explosive eruption?
a)
thick and sticky
b)
high viscosity
c)
high silica content
d)
thin and runny
13.
Felsic (light-colored) magma has a...
a)
Low silica content
b)
High silica content
14.
The name of a volcano that erupted in Washington State in 1980.
a)
Mt. Fuji
b)
Old Faithful
c)
Mt. St. Helens
d)
Mt. Pinatubo
15.
An opening through which the lava flows is called:
a)
crater
b)
caldera
c)
vent
d)
pipe
16.
This type of volcano has explosive eruptions that result in massive amounts of tephra (ash).
a)
Shield volcano
b)
Composite / Stratovolcano
c)
Cinder cone
d)
Fissure volcano
17.
Magma rises because it is...
a)
more dense than surrounding rock
b)
less dense than surrounding rock
18.
The Andes Mountains and volcanoes formed at...
a)
a divergent plate boundary
b)
a hot spot
c)
a convergent plate boundary
d)
a caldera
19.
Mafic (dark-colored) magma has a...
a)
high silica content
b)
low silica content
20.
This common type of volcano is made up of alternating layers of ash and lava.
a)
Shield volcano
b)
Composite / Stratovolcano
c)
Cinder cone
d)
Fissure volcano
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