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.
Lowering of pressure
B.
Increase in temperature
C.
Lowering of rock temperature
D.
Introduction of volatile material that lowers the melting point of the rock
Question #2
What happens to the majority of the rising magma that accumulates at the Neutral Buoyancy Zone?
A.
It erupts violentally
B.
It cools and sinks
C.
It cools and crystallizes
D.
It erupts non-violently
Question #3
Which of the following statements regarding the process of volcanic eruption is FALSE?
A.
Hydrothermal alteration weakens the surrounding rock.
B.
Pressure decreases when cracks rupture the magma chamber ceiling.
C.
Volatiles are forced out of the magma due to an increase in pressure.
D.
ressure increases when additional magma rises up from below.
Question #4
Which of the following volcanic features would you expect to form from a single Strombolian eruptive event?
A.
Cinder cones
B.
Shield volcanoes
C.
Lava domes
D.
Composite volcanoes
Question #5
How does volcanic activity enter into the varied agricultural productivity of the Indonesian islands of Borneo and Java?
A.
A large tsunami eroded most of the soil on one island.
B.
One island receives much more fresh ash.
C.
Volcanic gases periodically kills crops on one island.
D.
Volcanic mountains result in rain-shadow deserts.
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.
Pillow lava
B.
Obsidian
C.
Pahoehoe
D.
A'a
Question #8
Shield volcanoes like Mauna Loa are generally associated with which type of geological features?
A.
Convergent boundaries
B.
Transform boundaries
C.
Hot spots
D.
Divergent boundaries
Question #9
What type of volcano is shown in the picture?
A.
Shield volcano
B.
Caldera
C.
Cinder cone
D.
Composite volcano
Question #10
Which eruption forecasting instrument most precisely measures volcanic swelling?
A.
Chromatograph
B.
Seismograph
C.
Tiltmeter
D.
Gravimeter
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