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.
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 erupts violentally
B.
It cools and crystallizes
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.
Volatiles are forced out of the magma due to an increase in pressure.
B.
Hydrothermal alteration weakens the surrounding rock.
C.
Pressure decreases when cracks rupture the magma chamber ceiling.
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.
Composite volcanoes
C.
Shield volcanoes
D.
Lava domes
Question #5
How does volcanic activity enter into the varied agricultural productivity of the Indonesian islands of Borneo and Java?
A.
One island receives much more fresh ash.
B.
A large tsunami eroded most of the soil on one island.
C.
Volcanic mountains result in rain-shadow deserts.
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.
Neutral buoyancy zone
B.
Mid-ocean ridge
C.
Flood basalt
D.
Arc volcano
Question #7
What kind of lava is shown in the photo?
A.
Pahoehoe
B.
A'a
C.
Pillow lava
D.
Obsidian
Question #8
Shield volcanoes like Mauna Loa are generally associated with which type of geological features?
A.
Transform boundaries
B.
Divergent boundaries
C.
Hot spots
D.
Convergent boundaries
Question #9
What type of volcano is shown in the picture?
A.
Cinder cone
B.
Shield volcano
C.
Composite volcano
D.
Caldera
Question #10
Which eruption forecasting instrument most precisely measures volcanic swelling?
A.
Tiltmeter
B.
Chromatograph
C.
Gravimeter
D.
Seismograph
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