________ deserts form on the leeward side of mountain ranges.
a. Tropical
b. Rain-shadow
c. Coastal
d. Subtropical - ANSWER-B
________ occur(s) when earthquakes cause pore pressure to increase, which in turn causes grains to
loose contact and separate from each other.
a. Liquefaction
b. Aftershocks
c. Normal faults
d. Landslides - ANSWER-A
. ________ travel with a compressional motion.
a. Love waves
b. Rayleigh waves
c. P-waves
d. S-waves - ANSWER-C
A black, fine-grained tabular intrusion between two layers of horizontal sedimentary rock must
logically be a
a. basaltic sill
b. basaltic dike
c. granitic sill
d. granitic dike - ANSWER-A
A fast-moving flow that resembles fluid concrete consisting of a mixture of water and volcanoclastic
debris is termed a ________
a. lahar
b. pyroclastic flow
c. flood basalt
d. hyaloclastite - ANSWER-A
,Geology Exam Answer Keys
A fold shaped like an elongated arch is a(n) ________.
a. anticline
b. basin
c. dome
d. syncline - ANSWER-A
A large circular depression created by the collapse of the volcano into the drained magma chamber is
known as a
a. caldera
b. crater
c. conduit
d. flank vent - ANSWER-A
A magma high is silica (SiO2) is called ___________.
a. felsic
b. intermediate c. mafic
d. ultramafic - ANSWER-A
A relatively impermeable layer of rock or sediment is termed a(n) ________ in hydrogeologic contexts.
a. aquitard
b. confined aquifer
c. unconfined aquifer
d. unsaturated zone - ANSWER-A
A seismic wave will speed up when passing from the crust to the mantle because the mantle is made
of ________.
a. granite
b. magma
c. peridotite
d. basalt - ANSWER-C
A tsunami is ________.
a. a sea wave generated by a vertical displacement of water by an earthquake
b. a sloshing of water back and forth within a lake or a bay
, Geology Exam Answer Keys
c. a wave caused by unusually large tidal forces
d. the tendency of wet, clay-rich soils to behave like a liquid during an earthquake - ANSWER-A
An apron-shaped pile of alluvium that forms at the mouth of a canyon is known as a(n) ________.
a. playa
b. mesa
c. alluvial fan
d. inselberg - ANSWER-C
An earthquake occurs with an epicenter in the town of New Madrid, Missouri, in the interior of the
North American Plate. Where might the hypocenter of this earthquake plausibly be found?
a. in New Madrid (hypocenter and epicenter mean precisely the same thing)
b. 20 km south of New Madrid
c. 20 km beneath New Madrid
d. 200 km north New Madrid - ANSWER-C
An episode of mountain building is termed a(n) ________.
a. orogeny
b. phylogeny
c. foliation
d. exhumation - ANSWER-A
An increase in size of one unit of magnitude translates to ________
the ground motion.
a. 1 time c. 10 times
b. 2 times
c. 10 times
d. 32 times - ANSWER-C
As shown in the figure below, wind erosion can create a faceted rock known as a ________.
a. ventifact
b. lag deposit
c. yardang
d. wadi - ANSWER-A
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