Question 1

Why was it so important to survey the ocean floors?

Accepted Answer

A) People had a general curiosity of our planet. 
B) To get a better understanding of polar wandering. 
C) To know the topography and possible hiding places for submarines. 
D) To find pirate treasure. 
A) People had a general curiosity of our planet. 
B) To get a better understanding of polar wandering. 
C) To know the topography and possible hiding places for submarines. 
D) To find pirate treasure. C

Question 2

The outer core is

Accepted Answer

A) rock. 
B) plastic. 
C) liquid. 
D) the source for volcanoes. 
A) rock. 
B) plastic. 
C) liquid. 
D) the source for volcanoes. C

Question 3

Alfred Wegener supported his theory of continental drift by

Accepted Answer

A) fitting together the shorelines of the African and South American continents. 
B) using paleoclimatic data-evidence of glaciers in the Northern Hemisphere. 
C) paleomagnetic data. 
D) making a connection between rocks, rock structures, and plant and animal fossils found in both Africa and South America. 
A) fitting together the shorelines of the African and South American continents. 
B) using paleoclimatic data-evidence of glaciers in the Northern Hemisphere. 
C) paleomagnetic data. 
D) making a connection between rocks, rock structures, and plant and animal fossils found in both Africa and South America. D

Question 4

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 5

The Earth's lithosphere

Accepted Answer

A) is the same as the crust. 
B) consists of the crust and the asthenosphere. 
C) is the same as the mantle. 
D) consists of the crust and the uppermost part of the mantle. 
A) is the same as the crust. 
B) consists of the crust and the asthenosphere. 
C) is the same as the mantle. 
D) consists of the crust and the uppermost part of the mantle.

Question 6

Where does a tsunami usually occur?

Accepted Answer

A) Transform-fault boundary. 
B) Underwater reverse fault. 
C) Divergent boundary. 
D) Continental-continental convergent boundary. 
A) Transform-fault boundary. 
B) Underwater reverse fault. 
C) Divergent boundary. 
D) Continental-continental convergent boundary.

Question 7

The oldest rocks are found

Accepted Answer

A) at convergent boundaries. 
B) at divergent boundaries. 
C) in the ocean basins. 
D) on continental land. 
A) at convergent boundaries. 
B) at divergent boundaries. 
C) in the ocean basins. 
D) on continental land.

Question 8

Movement of the lithosphere

Accepted Answer

A) has a plasticlike flow. 
B) causes earthquakes and volcanic activity. 
C) has a leisurely pace and allows the formation of gentle rolling hills. 
D) is intermittent. 
A) has a plasticlike flow. 
B) causes earthquakes and volcanic activity. 
C) has a leisurely pace and allows the formation of gentle rolling hills. 
D) is intermittent.

Question 9

If the path of polar wandering found from two continents are not the same, then we can say that

Accepted Answer

A) Earth's magnetic history has been very complex. 
B) at least one of the continents has moved. 
C) our radioactive dating techniques have been inaccurate. 
D) the continents have always been widely separated. 
A) Earth's magnetic history has been very complex. 
B) at least one of the continents has moved. 
C) our radioactive dating techniques have been inaccurate. 
D) the continents have always been widely separated.

Question 10

and destroyed (subduction zones). At transform boundaries, plates slide horizontally past each other.

Accepted Answer

The lithosphere is broken up into about

Question 11

What evidence was used to support magnetic pole reversals?

Accepted Answer

A) Apparent polar wandering and alternating magnetic stripe patterns on the ocean floor. 
B) Paleomagnetism. 
C) Normal and reverse polarity. 
D) Continental drift and seafloor spreading. 
A) Apparent polar wandering and alternating magnetic stripe patterns on the ocean floor. 
B) Paleomagnetism. 
C) Normal and reverse polarity. 
D) Continental drift and seafloor spreading.

Question 12

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 13

Describe the theory of continental drift.

Accepted Answer

Continental drift proposed that continen

Question 14

The thickness of Earth's crust

Accepted Answer

A) varies from 10 km under the continents to 60 km under the oceans. 
B) on average is about 10 km. 
C) on average is about 60 km. 
D) varies from 10 km under the oceans to 60 km under the continents. 
A) varies from 10 km under the continents to 60 km under the oceans. 
B) on average is about 10 km. 
C) on average is about 60 km. 
D) varies from 10 km under the oceans to 60 km under the continents.

Question 15

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 16

What are the two major kinds of waves an earthquake produces?

Accepted Answer

Body waves and surface waves.

Question 17

The propagation of seismic waves through Earth's interior provides evidence of internal layering. The first boundary discovered was between the

Accepted Answer

A) upper and lower mantle. 
B) inner and outer core. 
C) outer core and the mantle. 
D) mantle and the crust. 
A) upper and lower mantle. 
B) inner and outer core. 
C) outer core and the mantle. 
D) mantle and the crust.

Question 18

Convection in the mantle is caused primarily by

Accepted Answer

A) heat moving from the crust to the core. 
B) conduction. 
C) gravity and temperature differences. 
D) friction of overlying lithosphere. 
A) heat moving from the crust to the core. 
B) conduction. 
C) gravity and temperature differences. 
D) friction of overlying lithosphere.

Question 19

Plate tectonics states that

Accepted Answer

A) the continents move through Earth's crust like an icebreaker through ice. 
B) earthquakes occur because tectonic plates break like a dropped dinner plate. 
C) tectonic plates have not moved since Pangaea broke up. 
D) tectonic plates are in slow, but constant motion. 
A) the continents move through Earth's crust like an icebreaker through ice. 
B) earthquakes occur because tectonic plates break like a dropped dinner plate. 
C) tectonic plates have not moved since Pangaea broke up. 
D) tectonic plates are in slow, but constant motion.

Question 20

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.

Exam 21: Plate Tectonics and Earths Interior

Why was it so important to survey the ocean floors?

The outer core is

Alfred Wegener supported his theory of continental drift by

Convergent boundaries are areas of

The Earth's lithosphere

Where does a tsunami usually occur?

The oldest rocks are found

Movement of the lithosphere

If the path of polar wandering found from two continents are not the same, then we can say that

and destroyed (subduction zones). At transform boundaries, plates slide horizontally past each other.

What evidence was used to support magnetic pole reversals?

The Earth's magnetic field

Describe the theory of continental drift.

The thickness of Earth's crust

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

What are the two major kinds of waves an earthquake produces?

The propagation of seismic waves through Earth's interior provides evidence of internal layering. The first boundary discovered was between the

Convection in the mantle is caused primarily by

Plate tectonics states that

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

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 Timereading 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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