Geol 102 - Environmental Geology » Spring 2020 » Plate Tectonics and Volcanoes Post Reading Quiz

Need help with your exam preparation?

Question #1
Which of the following DOES NOT contribute to melting of mafic rock?
A.   Introduction of volatile material that lowers the melting point of the rock
B.   Lowering of rock temperature
C.   Increase in temperature
D.   Lowering of pressure
Question #2
What happens to the majority of the rising magma that accumulates at the Neutral Buoyancy Zone?
A.   It cools and sinks
B.   It erupts violentally
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.   ressure increases when additional magma rises up from below.
D.   Volatiles are forced out of the magma due to an increase in pressure.
Question #4
Which of the following volcanic features would you expect to form from a single Strombolian eruptive event?
A.   Lava domes
B.   Composite volcanoes
C.   Cinder cones
D.   Shield 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.   Volcanic mountains result in rain-shadow deserts.
C.   Volcanic gases periodically kills crops on one island.
D.   One island receives much more fresh ash.
Question #6
The Ontong Java Plateau is an example of what type of volcanic feature?
A.   Arc volcano
B.   Mid-ocean ridge
C.   Flood basalt
D.   Neutral buoyancy zone
Question #7
What kind of lava is shown in the photo?
A.   Pillow lava
B.   Obsidian
C.   A'a
D.   Pahoehoe
Question #8
Shield volcanoes like Mauna Loa are generally associated with which type of geological features?
A.   Convergent boundaries
B.   Divergent boundaries
C.   Transform boundaries
D.   Hot spots
Question #9
What type of volcano is shown in the picture?
A.   Caldera
B.   Shield volcano
C.   Composite volcano
D.   Cinder cone
Question #10
Which eruption forecasting instrument most precisely measures volcanic swelling?
A.   Gravimeter
B.   Tiltmeter
C.   Seismograph
D.   Chromatograph

Need help with your exam preparation?