Question 1

What is the evidence for Earth's central core being solid?

Accepted Answer

Earth's solid central core is revealed b

Question 2

How old is the Atlantic Ocean? For how many years has magma been extruding in the mid-Atlantic?

Accepted Answer

The Mid-Atlantic Ridge is a spreading ce

Question 3

Divergent boundaries are areas of

Accepted Answer

A) tensional forces that stretch the crust and generate a spreading center. 
B) compressional forces that crunch the crust and generate a spreading center. 
C) compressional forces that crunch and shorten the crust by folding and faulting. 
D) plate collision. 
A) tensional forces that stretch the crust and generate a spreading center. 
B) compressional forces that crunch the crust and generate a spreading center. 
C) compressional forces that crunch and shorten the crust by folding and faulting. 
D) plate collision.

Question 4

Seismic waves are classified as body waves and surface waves.An example of a body wave is a

Accepted Answer

A) Primary wave (P-wave). 
B) Love wave. 
C) Rayleigh wave. 
D) Tertiary wave (T-wave). 
A) Primary wave (P-wave). 
B) Love wave. 
C) Rayleigh wave. 
D) Tertiary wave (T-wave).

Question 5

According to plate tectonic theory,the San Andreas fault is a

Accepted Answer

A) convergence zone. 
B) divergence zone. 
C) subduction zone. 
D) transform fault. 
A) convergence zone. 
B) divergence zone. 
C) subduction zone. 
D) transform fault.

Question 6

From first to last,what is the order that Earth's internal boundary layers were discovered?

Accepted Answer

1^st: Boundary of core and mantle

Question 7

Because S-waves do not travel through Earth's outer core,scientists inferred that the outer core is

Accepted Answer

A) impenetrable. 
B) molten liquid. 
C) solid. 
D) very dense. 
A) impenetrable. 
B) molten liquid. 
C) solid. 
D) very dense.

Question 8

Evidence to support the fact that Earth's central core is solid can be attributed to

Accepted Answer

A) a decrease in S-wave velocity as they encounter and move through the inner core. 
B) an increase in P-wave velocity as they encounter and move through the inner core. 
C) a decrease in P-wave velocity as they encounter and move through the inner core. 
D) an increase in S-wave velocity as they encounter and move through the inner core. 
A) a decrease in S-wave velocity as they encounter and move through the inner core. 
B) an increase in P-wave velocity as they encounter and move through the inner core. 
C) a decrease in P-wave velocity as they encounter and move through the inner core. 
D) an increase in S-wave velocity as they encounter and move through the inner core.

Question 9

The upper mantle can be divided into two portions,the

Accepted Answer

A) asthenosphere (lower zone of the upper mantle)and part of the lithosphere (the top zone of the upper mantle). 
B) asthenosphere (top zone of the upper mantle)and the lithosphere (the lower upper mantle). 
C) Moho and the lithosphere. 
D) continental mantle and the oceanic mantle. 
A) asthenosphere (lower zone of the upper mantle)and part of the lithosphere (the top zone of the upper mantle). 
B) asthenosphere (top zone of the upper mantle)and the lithosphere (the lower upper mantle). 
C) Moho and the lithosphere. 
D) continental mantle and the oceanic mantle.

Question 10

The theory of plate tectonics states that

Accepted Answer

A) the lithosphere is broken up into several plates that move about as a result of convective motion in the asthenosphere. 
B) earthquakes and volcanic activity result from convection motion in the lithosphere. 
C) buoyant lithospheric plates float on top of the rigid asthenosphere. 
D) the plates move in conveyor-belt fashion as new crust is generated at the continental margins and destroyed at the mid-ocean ridges. 
A) the lithosphere is broken up into several plates that move about as a result of convective motion in the asthenosphere. 
B) earthquakes and volcanic activity result from convection motion in the lithosphere. 
C) buoyant lithospheric plates float on top of the rigid asthenosphere. 
D) the plates move in conveyor-belt fashion as new crust is generated at the continental margins and destroyed at the mid-ocean ridges.

Question 11

The outer core is liquid because

Accepted Answer

A) it is magnetically charged,and,like a magnet,energy flows from one region to another. 
B) the inner core is solid. 
C) there is less weight,and thus less pressure on it. 
D) it is composed of molten iron. 
A) it is magnetically charged,and,like a magnet,energy flows from one region to another. 
B) the inner core is solid. 
C) there is less weight,and thus less pressure on it. 
D) it is composed of molten iron.

Question 12

If seafloor spreading creates new lithosphere,does the size of Earth change?

Accepted Answer

A) Yes,Earth is getting larger. 
B) No,the extra crust is crumpled up to form mountains. 
C) No,older crust is recycled back into the asthenosphere. 
D) Yes,the Earth is shrinking because it is cooling. 
A) Yes,Earth is getting larger. 
B) No,the extra crust is crumpled up to form mountains. 
C) No,older crust is recycled back into the asthenosphere. 
D) Yes,the Earth is shrinking because it is cooling.

Question 13

Why are older rocks more likely to be found on the continents than on the ocean floor?

Accepted Answer

Mid-ocean rifts are places of rock forma

Question 14

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 15

The ocean crust

Accepted Answer

A) becomes progressively younger away from the mid-ocean ridges. 
B) is the same age worldwide. 
C) becomes progressively older away from the mid-ocean ridge. 
D) ranges in age,the oldest ocean crust is in the Atlantic and the youngest is in the Arctic. 
A) becomes progressively younger away from the mid-ocean ridges. 
B) is the same age worldwide. 
C) becomes progressively older away from the mid-ocean ridge. 
D) ranges in age,the oldest ocean crust is in the Atlantic and the youngest is in the Arctic.

Question 16

What are the eight major plates according to the theory of plate tectonics?

Accepted Answer

Eurasian Plate,Indo-Australian

Question 17

Describe how the different paths of polar wandering helped establish that continents move over geologic time.

Accepted Answer

A plot of the apparent path of polar wan

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

Reverse faults are the result of

Accepted Answer

A) tension. 
B) compression. 
C) divergence. 
D) heat. 
A) tension. 
B) compression. 
C) divergence. 
D) heat.

Question 20

The stress that occurs when material is pulled apart is called

Accepted Answer

A) compressional stress. 
B) tensional stress. 
C) shear stress. 
D) simple stress. 
A) compressional stress. 
B) tensional stress. 
C) shear stress. 
D) simple stress.

Exam 21: Plate Tectonics and Earths Interior

What is the evidence for Earth's central core being solid?

How old is the Atlantic Ocean? For how many years has magma been extruding in the mid-Atlantic?

Divergent boundaries are areas of

Seismic waves are classified as body waves and surface waves.An example of a body wave is a

According to plate tectonic theory,the San Andreas fault is a

From first to last,what is the order that Earth's internal boundary layers were discovered?

Because S-waves do not travel through Earth's outer core,scientists inferred that the outer core is

Evidence to support the fact that Earth's central core is solid can be attributed to

The upper mantle can be divided into two portions,the

The theory of plate tectonics states that

The outer core is liquid because

If seafloor spreading creates new lithosphere,does the size of Earth change?

Why are older rocks more likely to be found on the continents than on the ocean floor?

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

The ocean crust

What are the eight major plates according to the theory of plate tectonics?

Describe how the different paths of polar wandering helped establish that continents move over geologic time.

Convection in the mantle is caused primarily by

Reverse faults are the result of

The stress that occurs when material is pulled apart is called

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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