Earth Science: Earth Materials and Processes, Book F

Section 2: Types of Volcanoes

Section 2 Self-Check Quiz-Eng.

1
What two factors control the explosiveness of an eruption?
A)the amount of water vapor and silica in the magma
B)the time of year and current weather conditions
C)the amount of gases and pressure within Earth's crust
D)the pressure within Earth and plate movement
2
High levels of silica causes magma to become __________.
A)more fluid
B)thinner
C)less dense
D)thicker
3
The difference between basaltic and granitic magma is __________.
A)the amount of water vapor
B)the color
C)the amount of silica
D)the way it cools
4
Shield volcanoes are the result of __________.
A)basaltic lava flows
B)andesitic lava flows
C)granitic lava flows
D)basaltic and andesitic lava flows
5
Cinder cone volcanic eruptions are ___________.
A)slow and occur over long periods of time
B)explosive and throw lava high into the air
C)gradual and pour lava over the edges, which collects in pools
D)gradual and pour tephra over the edges
6
Composite volcanoes are found mostly where ___________.
A)hot spots in the mantle occur
B)Earth's plates pull apart
C)rifts in Earth's surface occur
D)Earth's plates come together and one plate sinks beneath the other
7
Granitic magma eruptions are
A)explosive
B)quiet
C)slow
D)fluid
8
Of the three types of volcanoes, which is the least explosive?
A)shield volcanoes
B)composite volcanoes
C)cinder volcanoes
D)They all have the same level of explosiveness.
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