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WorksheetsChapter 6 Volcanoes
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiescent?
a)
A) amount of dissolved gas in the magma
b)
B) temperature of the magma
c)
C) composition of the magma
d)
D) all of these
2.
________ tend to increase the explosive potential of a magma body beneath a volcano.
a)
A) High viscosity and high dissolved gas content
b)
B) High viscosity and low dissolved gas content
c)
C) Low silica content and low viscosity
d)
D) Low viscosity and low dissolved gas content
3.
Which one of the following shows the correct order (left to right) of decreasing magma viscosity in order of composition?
a)
A) rhyolite, andesite, basalt
b)
B) andesite, rhyolite, basalt
c)
C) basalt, rhyolite, andesite
d)
D) basalt, andesite, rhyolite
4.
Shield volcanoes form from what type of magma?
a)
A) high viscosity basaltic magmas
b)
B) low viscosity rhyolitic magmas
c)
C) low viscosity basaltic magmas
d)
D) high viscosity rhyolitic magmas
5.
The higher the viscosity of a magma, the ________ the potential for explosive eruptions.
a)
A) higher
b)
B) lower
6.
Identify what letter A represents in the diagram.
a)
A) bomb
b)
B) lava flow
c)
C) magma chamber
d)
D) vent
e)
E) pyroclastic material
7.
Identify what letter B represents in the diagram.
a)
A) bomb
b)
B) lava flow
c)
C) magma chamber
d)
D) vent
e)
E) pyroclastic material
8.
Identify what letter C represents in the diagram.
a)
A) bomb
b)
B) lava flow
c)
C) magma chamber
d)
D) vent
e)
E) pyroclastic material
9.
Identify what letter D represents in the diagram.
a)
A) bomb
b)
B) lava flow
c)
C) magma chamber
d)
D) vent
e)
E) pyroclastic material
10.
Identify what letter E represents in the diagram.
a)
A) bomb
b)
B) lava flow
c)
C) magma chamber
d)
D) vent
e)
E) pyroclastic material
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