Question 1

The process whereby ground shaking disrupts and loosens the structure of the soil causing it flow is known as

Accepted Answer

A)  creep.
B)  solifluction.
C)  slump.
D)  gelification.
E)  liquefaction.F) A) and B)
G) A) and E)

Question 2

Terranes refer to

Accepted Answer

A)  the topography of a tract of land.
B)  subducted oceanic crust that is melted and later reaches the surface in volcanic eruptions or cools in the subsurface as an intrusive body.
C)  fragmented crustal material from one plate and accreted to another plate.
D)  a large region where a craton is exposed at the surface.
E)  the formation of new oceanic crust along mid-ocean ridges.F) B) and C)
G) A) and B)

Question 3

An instrument used to record vibrations in the crust is the

Accepted Answer

A)  land barometer.
B)  seismograph.
C)  the Richter scale.
D)  tiltmeter.
E)  sextant.F) C) and E)
G) B) and E)

Question 4

Which of the following is not a location in which volcanoes typically occur?

Accepted Answer

A)  subduction zones
B)  cratons
C)  sea-floor spreading centers
D)  hot spots
E)  continental rift zonesF) B) and D)
G) B) and C)

Question 5

Which of the following is not correct regarding terranes?

Accepted Answer

A)  They are smaller-scale migrating crustal pieces;i.e. ,microplates.
B)  They may accrete onto continents and thereby increase the size of the continents.
C)  They are framed by fracture zones.
D)  They are very similar in composition to the continents to which they attach.
E)  They can move thousands of miles from their place of origin.F) B) and D)
G) A) and B)

Question 6

Which of the following properly describes the formation of continental crust?

Accepted Answer

A)  All continental crust was formed millions of years ago.There is no active continental crust being formed.
B)  The formation of continental crust is independent of the formation of oceanic crust,involving only volcanism over the land masses.
C)  The formation of continental crust involves the entire sequence of seafloor spreading,subduction,remelting of oceanic crust,and subsequent rise of the remelted material.
D)  New continental crust is formed essentially in the same many as oceanic crust - from upwelling at mid-continental ridges.
E)  Continental crust,unlike oceanic crust,forms along transform plate boundaries where small amounts of magma are able to upwell to the surface,slowly forming new continental crust.F) A) and E)
G) C) and D)

Question 7

The principles of buoyancy and balance,when applied to Earth's crust,helps us to explain fluctuations in Earth's outer crust,a property known as

Accepted Answer

A)  folding.
B)  Moho effect.
C)  isostasy.
D)  orogenesis.
E)  faulting.F) B) and E)
G) All of the above

Question 8

Effusive eruptions are not related to which of the following?

Accepted Answer

A)  magma rich in iron and magnesium
B)  low-viscosity magma
C)  magma rich in silica and aluminum
D)  gently sloping shield volcanoes
E)  relatively gentle eruptionsF) B) and E)
G) C) and E)

Question 9

Discuss the three types of convergent plate boundaries and their typical orogenies.

Accepted Answer

Oceanic plate-continental plate-where a ...

Question 10

Types of folds and their features

Folded layers of rock can form a wavelike pattern of troughs and crests.The layers near the trough (i.e. ,downward fold) form

Accepted Answer

A)  a syncline.
B)  a tension zone.
C)  an anticline.
D)  a thrust fault.
E)  shear.F) A) and E)
G) C) and D)

Question 11

Which of the following is not used to rate an earthquake on the moment magnitude scale?

Accepted Answer

A)  the amount of fault slippage that occurred
B)  the size of the subsurface or surface area that ruptured
C)  the amount of death and destruction that occurred
D)  the nature of the ground materials affected by the quake
E)  extreme ground accelerationF) A) and B)
G) D) and E)

Question 12

A gently sloping mountain landform built from effusive eruption is known as a

Accepted Answer

A)  cinder cone.
B)  crater.
C)  caldera.
D)  shield volcano.
E)  pluton.F) A) and B)
G) A) and C)

Question 13

A description,such as "considerable-to-serious damage to buildings," would be used in the ___scale.

Accepted Answer

A)  Richter
B)  Modified Mercalli Intensity
C)  Beaufort
D)  Mohs
E)  Moment MagnitudeF) A) and D)
G) B) and D)

Question 14

The Wrangellia terranes refer to

Accepted Answer

A)  a former volcanic island arc that migrated 10,000 km (6200 mi. ) to its present location along the western margin of North America.
B)  a terrane in southern Tibet that migrated to the region during the Paleozoic from Australia.
C)  a mountain range that became part of the Himalayas.
D)  pieces of crust that moved with the Pacific plate to their present location near Japan.
E)  an exotic terrane that migrated west across the Pacific Ocean and attached to the Asian land mass.F) A) and E)
G) A) and D)

Question 15

Which of the following shows the general sequence of an orogeny?

Accepted Answer

A)  thickening of crust through accretion or magma intrusion-uplift-weathering and/or erosion
B)  uplift-thickening of crust through accretion or magma intrusion-weathering and/or erosion
C)  weathering and/or erosion-uplift-thickening of crust through accretion or magma intrusion
D)  thickening of crust through accretion or magma intrusion-weathering and/or erosion-uplift
E)  erosion-uplift-thickening of crust through accretion or magma intrusion-weatheringF) C) and E)
G) B) and D)

Question 16

The process of isostatic adjustment is most closely associated with which of the following?

Accepted Answer

A)  plate collisions
B)  volcanic activity
C)  sea-floor spreading.
D)  buoyancy
E)  subductionF) B) and E)
G) B) and D)

Question 17

What is the expected number of M 8.0 earthquakes per year?

Accepted Answer

A)  120
B)  800
C)  1
D)  13,000
E)  1,319F) B) and C)
G) A) and B)

Question 18

Small,circular surface depressions usually found at or near the summit of a volcano are known as

Accepted Answer

A)  cinder cones.
B)  craters.
C)  calderas.
D)  domes.
E)  shield volcanoes.F) A) and B)
G) B) and C)

Question 19

Types of folds and their features

Folded layers of rock can form a wavelike pattern of troughs and crests.The layers near the crest (i.e. ,the upward fold) form

Accepted Answer

A)  a syncline.
B)  a tension zone.
C)  an anticline.
D)  a thrust fault.
E)  shear.F) B) and E)
G) C) and E)

Question 20

At this convergent boundary,neither plate is subducted,rather folding,faulting,and uplift occurs.

Accepted Answer

A)  oceanic plate-continental plate
B)  oceanic plate-oceanic plate
C)  continental-plate-continental plate
D)  continental shield-craton
E)  terrane-cratonF) D) and E)
G) None of the above

Exam 12: Tectonics, Earthquakes, and Volcanism

Types of folds and their features Folded layers of rock can form a wavelike pattern of troughs and crests.The layers near the trough (i.e. ,downward fold) form

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Discuss the three types of convergent plate boundaries and their typical orogenies.

Correct AnswerverifiedOceanic plate-continental plate-where a ...View AnswerShow Answer

Small,circular surface depressions usually found at or near the summit of a volcano are known as

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A gently sloping mountain landform built from effusive eruption is known as a

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What is the expected number of M 8.0 earthquakes per year?

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Which of the following properly describes the formation of continental crust?

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Which of the following is not correct regarding terranes?

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Which of the following shows the general sequence of an orogeny?

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Which of the following is not a location in which volcanoes typically occur?

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The principles of buoyancy and balance,when applied to Earth's crust,helps us to explain fluctuations in Earth's outer crust,a property known as

Correct AnswerverifiedShow Answer

An instrument used to record vibrations in the crust is the

Correct AnswerverifiedShow Answer

The Wrangellia terranes refer to

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Which of the following is not used to rate an earthquake on the moment magnitude scale?

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Effusive eruptions are not related to which of the following?

Correct AnswerverifiedShow Answer

The process whereby ground shaking disrupts and loosens the structure of the soil causing it flow is known as

Correct AnswerverifiedShow Answer

Types of folds and their features Folded layers of rock can form a wavelike pattern of troughs and crests.The layers near the crest (i.e. ,the upward fold) form

Correct AnswerverifiedShow Answer

At this convergent boundary,neither plate is subducted,rather folding,faulting,and uplift occurs.

Correct AnswerverifiedShow Answer

A description,such as "considerable-to-serious damage to buildings," would be used in the ___scale.

Correct AnswerverifiedShow Answer

Terranes refer to

Correct AnswerverifiedShow Answer

The process of isostatic adjustment is most closely associated with which of the following?

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Oceanic plate-continental plate-where a ...
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