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WorksheetsVolcano Connor
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
A sleeping volcano is called what?
a)
active
b)
dormant
c)
extinct
2.
A low silica volcano makes what type of explosion
a)
quiet eruption
b)
explosive eruption
3.
A high silica volcano makes what type of an explosive?
a)
quiet eruption
b)
explosive eruption
4.
The composition of magma determines its _____.
a)
viscosity
b)
darkness
c)
color
d)
none of the above
5.
This volcano is most likely which type of volcano?
a)
Felsic
b)
Composite
c)
Shield
d)
Cinder cone
6.
As the temperature of lava increases, ________
a)
its viscosity decrease
b)
it begins to harden
c)
its viscosity increases
d)
it can flow a much short distance
7.
Which list places the magma types in order of decreasing viscosity (most viscous listed first)?
a)
basaltic, andesitic, rhyolitic
b)
rhyolitic, andesitic, basaltic
c)
andesitic, basaltic, rhyolitic
d)
basaltic, rhyolitic, andesitic
8.
Once magma reaches the earth's surface it is called.....
a)
Silica
b)
Rock
c)
lava
9.
A huge hole that is left behind when a volcano collapses is called a
a)
Batholith
b)
Caldera
c)
Geyser
10.
Cinder cones can be described as...
a)
Very large with gentle slopes and eruptions of low viscosity magma
b)
Large with steep slopes and violent eruptions of very viscous magma
c)
Small and clustered in groups with steep slopes and firey eruptions that occur only once
11.
Most volcanoes occur
a)
oceanic/continental convergent
b)
oceanic/oceanic convergent
c)
transform boundary
d)
oceanic/continental divergent
12.
What is pyroclastic material?
a)
Dust, ash and other material that comes out of a volcano.
b)
A type of magma that is in a volcano.
c)
A type of volcano.
13.
Volcanoes can be found...
a)
on land
b)
under water
c)
on islands
d)
all of the above
14.
Which types of magma contains the least amount of SiO2
a)
rhyolitic
b)
andesitic
c)
felsic
d)
basaltic
15.
A volcano made from alternating layers of ash and lava is called a(n) _________________ volcano
a)
composite
b)
cinder cone
c)
shield
d)
fissure
16.
Smaller volcanoes that typically throw ash into the air during eruption
a)
cinder cone
b)
shield
c)
composite
d)
fissure
17.
This is the name for the chain of volcanos around the edge of the Pacific Plate.
a)
Circle of Fire
b)
Ring of Lava
c)
Ring of Fire
d)
Circle of Magma
18.
What do you call melted rock below the Earth's surface?
a)
epicenter
b)
fault
c)
focus
d)
magma
19.
An area where magma melts through the crust in the middle of a plate is called a ________.
a)
island arc
b)
hot spot
c)
geyser
d)
pipe
20.
What are the three main types of volcanoes?
a)
extinct, active, dormant
b)
cinder cone, composite, shield
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