Geol 102 - Environmental Geology » Spring 2020 » Plate Tectonics and Volcanoes Post Reading Quiz
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Question #1
Which of the following DOES NOT contribute to melting of mafic rock?
A.
Increase in temperature
B.
Lowering of pressure
C.
Introduction of volatile material that lowers the melting point of the rock
D.
Lowering of rock temperature
Question #2
What happens to the majority of the rising magma that accumulates at the Neutral Buoyancy Zone?
A.
It cools and crystallizes
B.
It erupts violentally
C.
It erupts non-violently
D.
It cools and sinks
Question #3
Which of the following statements regarding the process of volcanic eruption is FALSE?
A.
Hydrothermal alteration weakens the surrounding rock.
B.
Volatiles are forced out of the magma due to an increase in pressure.
C.
ressure increases when additional magma rises up from below.
D.
Pressure decreases when cracks rupture the magma chamber ceiling.
Question #4
Which of the following volcanic features would you expect to form from a single Strombolian eruptive event?
A.
Shield volcanoes
B.
Composite volcanoes
C.
Cinder cones
D.
Lava domes
Question #5
How does volcanic activity enter into the varied agricultural productivity of the Indonesian islands of Borneo and Java?
A.
Volcanic mountains result in rain-shadow deserts.
B.
A large tsunami eroded most of the soil on one island.
C.
One island receives much more fresh ash.
D.
Volcanic gases periodically kills crops on one island.
Question #6
The Ontong Java Plateau is an example of what type of volcanic feature?
A.
Flood basalt
B.
Neutral buoyancy zone
C.
Arc volcano
D.
Mid-ocean ridge
Question #7
What kind of lava is shown in the photo?
A.
A'a
B.
Pillow lava
C.
Pahoehoe
D.
Obsidian
Question #8
Shield volcanoes like Mauna Loa are generally associated with which type of geological features?
A.
Transform boundaries
B.
Convergent boundaries
C.
Hot spots
D.
Divergent boundaries
Question #9
What type of volcano is shown in the picture?
A.
Caldera
B.
Composite volcano
C.
Shield volcano
D.
Cinder cone
Question #10
Which eruption forecasting instrument most precisely measures volcanic swelling?
A.
Seismograph
B.
Chromatograph
C.
Gravimeter
D.
Tiltmeter
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