Question 1

The speed of a seismic wave depends on

Accepted Answer

A) the type of material it travels through. 
B) how far it has to travel. 
C) its amplitude. 
D) its frequency. 
A) the type of material it travels through. 
B) how far it has to travel. 
C) its amplitude. 
D) its frequency.

Question 2

At divergent boundaries the dominant rock type is

Accepted Answer

A) basalt. 
B) granite. 
C) andesite. 
D) basalt,granite,and andesite. 
A) basalt. 
B) granite. 
C) andesite. 
D) basalt,granite,and andesite.

Question 3

Subduction is the process of one lithospheric plate descending beneath another.Why does the oceanic portion of the lithosphere undergo subduction while the continental portion does not?

Accepted Answer

Oceanic crust is more dense th

Question 4

How did seafloor spreading suggest a driving force for continental drift?

Accepted Answer

A) Youngest seafloor is found near continents. 
B) Seafloor spreading pushes continents. 
C) Mantle convection causes irreversible slippage. 
D) Subduction creates the youngest seafloor. 
A) Youngest seafloor is found near continents. 
B) Seafloor spreading pushes continents. 
C) Mantle convection causes irreversible slippage. 
D) Subduction creates the youngest seafloor.

Question 5

What is the principle of isostasy,and what evidence supports it?

Accepted Answer

The principle of isostasy is the state o

Question 6

Water causes partial melting of the mantle at which type of plate boundary?

Accepted Answer

A) convergent boundaries 
B) divergent boundaries 
C) transform-fault boundaries 
A) convergent boundaries 
B) divergent boundaries 
C) transform-fault boundaries

Question 7

Most of Earth's seismic activity,volcanism,and mountain building occur along

Accepted Answer

A) convergent boundaries. 
B) divergent boundaries. 
C) plate boundaries. 
D) transform fault boundaries. 
A) convergent boundaries. 
B) divergent boundaries. 
C) plate boundaries. 
D) transform fault boundaries.

Question 8

Earthquakes are caused by the

Accepted Answer

A) friction between diverging plates. 
B) sudden release of energy that is stored elastically in deforming rocks. 
C) expansion of Earth's crust. 
D) combined motion of tectonic plates. 
A) friction between diverging plates. 
B) sudden release of energy that is stored elastically in deforming rocks. 
C) expansion of Earth's crust. 
D) combined motion of tectonic plates.

Question 9

An anticline is a fold in which the limbs bend

Accepted Answer

A) downward. 
B) upward. 
A) downward. 
B) upward.

Question 10

Briefly describe the different types of plate boundaries.

Accepted Answer

Divergent boundaries,produced by tension

Question 11

Convergent boundaries are areas of

Accepted Answer

A) compressional forces that crunch the crust and generate a spreading center. 
B) tensional forces that stretch the crust and generate a spreading center. 
C) crustal formation. 
D) plate collision. 
A) compressional forces that crunch the crust and generate a spreading center. 
B) tensional forces that stretch the crust and generate a spreading center. 
C) crustal formation. 
D) plate collision.

Question 12

Continental crust extends farther down into the mantle than oceanic crust because

Accepted Answer

A) it is thicker than oceanic crust. 
B) oceanic crust is buoyant and rides atop the mantle. 
C) it is heavier than oceanic crust. 
D) it sinks into the mantle and asthenosphere. 
A) it is thicker than oceanic crust. 
B) oceanic crust is buoyant and rides atop the mantle. 
C) it is heavier than oceanic crust. 
D) it sinks into the mantle and asthenosphere.

Question 13

Describe the seafloor spreading theory.

Accepted Answer

The seafloor spreading theory

Question 14

The Earth's layer with plastic-like behavior is the

Accepted Answer

A) mantle. 
B) crust. 
C) inner core. 
D) outer core. 
A) mantle. 
B) crust. 
C) inner core. 
D) outer core.

Question 15

Tectonic plates are composed of the

Accepted Answer

A) crust and mantle. 
B) lithosphere. 
C) lithosphere and the asthenosphere. 
D) crust. 
A) crust and mantle. 
B) lithosphere. 
C) lithosphere and the asthenosphere. 
D) crust.

Question 16

The Earth's magnetic field

Accepted Answer

A) never appreciably changes. 
B) has reversed itself many times. 
C) is centered at Earth's core. 
D) both B and C 
A) never appreciably changes. 
B) has reversed itself many times. 
C) is centered at Earth's core. 
D) both B and C

Question 17

Rocks begin to deform when they are stressed.Near Earth's surface,when stress is severe,the rock

Accepted Answer

A) behaves plastically-it folds and flows. 
B) Is brittle-it breaks producing faults and fractures. 
C) has brittle deformation-it folds and flows. 
D) has plastic deformation-it faults and fractures. 
A) behaves plastically-it folds and flows. 
B) Is brittle-it breaks producing faults and fractures. 
C) has brittle deformation-it folds and flows. 
D) has plastic deformation-it faults and fractures.

Question 18

Paleomagnetism from a rock gives information on the

Accepted Answer

A) direction from the rock to the North Pole. 
B) present-day magnetic field. 
C) amount of iron in the rock. 
D) magnetic field at the time the rock was formed. 
A) direction from the rock to the North Pole. 
B) present-day magnetic field. 
C) amount of iron in the rock. 
D) magnetic field at the time the rock was formed.

Question 19

Mountains tend to form in long narrow ranges because

Accepted Answer

A) of plate convergence-plates coming together. 
B) pluton formation tends to develop in an elongate pattern rather than a bubble-like pattern. 
C) of plate divergence-plates squeezing together. 
D) they form next to oceanic boundaries. 
A) of plate convergence-plates coming together. 
B) pluton formation tends to develop in an elongate pattern rather than a bubble-like pattern. 
C) of plate divergence-plates squeezing together. 
D) they form next to oceanic boundaries.

Question 20

In a folded sequence of rocks we find older rocks at the axis of the fold and younger rocks away from the fold axis.The fold is

Accepted Answer

A) called a syncline. 
B) called an anticline. 
C) plunging. 
D) tilted. 
A) called a syncline. 
B) called an anticline. 
C) plunging. 
D) tilted.

Exam 21: Plate Tectonics and Earths Interior

The speed of a seismic wave depends on

At divergent boundaries the dominant rock type is

Subduction is the process of one lithospheric plate descending beneath another.Why does the oceanic portion of the lithosphere undergo subduction while the continental portion does not?

How did seafloor spreading suggest a driving force for continental drift?

What is the principle of isostasy,and what evidence supports it?

Water causes partial melting of the mantle at which type of plate boundary?

Most of Earth's seismic activity,volcanism,and mountain building occur along

Earthquakes are caused by the

An anticline is a fold in which the limbs bend

Briefly describe the different types of plate boundaries.

Convergent boundaries are areas of

Continental crust extends farther down into the mantle than oceanic crust because

Describe the seafloor spreading theory.

The Earth's layer with plastic-like behavior is the

Tectonic plates are composed of the

The Earth's magnetic field

Rocks begin to deform when they are stressed.Near Earth's surface,when stress is severe,the rock

Paleomagnetism from a rock gives information on the

Mountains tend to form in long narrow ranges because

In a folded sequence of rocks we find older rocks at the axis of the fold and younger rocks away from the fold axis.The fold is

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: The Nature of Science

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