Question 1

Which of the following drives the exogenic processes of the rock cycle?

Accepted Answer

A)  Atmospheric circulation.
B)  Rock cycle.
C)  Hydrologic cycle.
D)  Tectonic cycle.E) A) and B)
F) C) and D)

Question 2

Why does ocean floor subduct under continents?

Accepted Answer

A)  The ocean floor has a lower density and therefore sinks more easily.
B)  The ocean floor is made of felsic minerals and is heavier than continental material.
C)  The ocean floor is made of mafic material and is therefore denser than continental material.
D)  The weight of the continents is so great that they push the ocean floor material downward.E) A) and C)
F) A) and B) C

Question 3

On average,how is the thickness of oceanic crust compared to that of continental crust?

Accepted Answer

A)  Ocean crust thickness is greater than continental crust.
B)  Ocean crust thickness is less than continental crust.
C)  Ocean crust thickness is the same as continental crust.D) A) and C)
E) A) and B)

Question 4

The half-life of a radioactive isotope does not vary.

Accepted Answer

A) True 
 B)False

Question 5

Oceanic crust is denser than continental crust.

Accepted Answer

A) True 
 B)False  True

Question 6

Which best describes felsic igneous rock,such as granite and rhyolite?

Accepted Answer

A)  These have dark coloration.
B)  These are not resistant to weathering.
C)  These have a high melting temperature.
D)  These are high in silicate minerals.E) B) and C)
F) All of the above

Question 7

Which are associated with divergent plate boundaries?

Accepted Answer

A)  Sea-floor spreading centers.
B)  Collision zones between plates.
C)  Transform plate boundaries.
D)  All plate boundaries.E) None of the above
F) A) and D)

Question 8

Which are the names that contrast molten rock beneath Earth's surface with molten rock on Earth's surface?

Accepted Answer

A)  Lava; magma.
B)  Intrusive; extrusive.
C)  Magma; lava.
D)  Extrusive; intrusive.E) None of the above
F) A) and B)

Question 9

Diagram and label the three types of plate boundaries.

Accepted Answer

Convergent boundaries occur in areas of ...

Question 10

Just eight natural elements make up over 98% of Earth's crust by weight.

Accepted Answer

A) True 
 B)False

Question 11

The deepest places in the ocean are those in which rifting occurs.

Accepted Answer

A) True 
 B)False

Question 12

Plate boundaries are associated with which of the following?

Accepted Answer

A)  Earthquakes and volcanoes.
B)  chemical weathering.
C)  Sublimation.
D)  Drifting.E) C) and D)
F) A) and B)

Question 13

What is sedimentary rock formed from the combined processes of weathering,erosion,transportation,deposition,lithification,and compaction of rock fragments of other rocks?

Accepted Answer

A)  Clastic.
B)  Biochemical.
C)  Organic.
D)  Chemical.E) B) and C)
F) A) and B)

Question 14

Convergent plate boundaries occur in areas of seafloor spreading.

Accepted Answer

A) True 
 B)False

Question 15

Which drives the endogenic processes of the rock cycle?

Accepted Answer

A)  Atmospheric circulation.
B)  Rock cycle.
C)  Hydrologic cycle.
D)  Tectonic cycle.E) A) and D)
F) B) and C)

Question 16

What type of rock forms from the solidification of molten material?

Accepted Answer

A)  Sedimentary.
B)  Metamorphic.
C)  Igneous.
D)  Clastic.E) None of the above
F) B) and D)

Question 17

Which is the continuous alteration of Earth materials from one rock type to another?

Accepted Answer

A)  Geologic cycle.
B)  Rock cycle.
C)  Hydrologic cycle.
D)  Tectonic cycle.E) A) and B)
F) A) and C)

Question 18

In terms of dating of specific rocks,structures,or landscapes,numerical age refers to which of the following?

Accepted Answer

A)  The age of geological features based on isotopic dating techniques.
B)  The approximate age of geological features based on the period or epoch in which they occurred.For instance,noting a feature is from the Cretaceous.
C)  A range of numeric values in which a feature was likely formed and based on several lines of evidence,such as paleoclimatic and paleobotanical reconstructions.
D)  The age of one feature with respect to another within a sequence of events and deduced from the positions of rock strata above and below one another.E) A) and C)
F) None of the above

Question 19

Consider the age of the sea floor.Which of the following is correct?

Accepted Answer

A)  The age of the sea floor is the same in most areas of the ocean.
B)  The age of the sea floor does not follow a discernable pattern.
C)  The age of the sea floor increases with increasing distance from a mid-ocean ridge.
D)  The age of the sea floor increases with increasing distance from a trench.E) B) and C)
F) C) and D)

Question 20

From which of the following is knowledge of Earth's interior mostly derived?

Accepted Answer

A)  Direct sampling of the interior using deep-test wells.
B)  Work in Earth's deepest caverns and caves.
C)  Indirect evidence involving the analysis of seismic waves.
D)  Historic and prehistoric records.E) A) and D)
F) A) and C) C

Exam 12: The Dynamic Planet

Which of the following drives the exogenic processes of the rock cycle?

Correct AnswerverifiedShow Answer

Why does ocean floor subduct under continents?

Correct AnswerverifiedC

On average,how is the thickness of oceanic crust compared to that of continental crust?

Correct AnswerverifiedShow Answer

The half-life of a radioactive isotope does not vary.

Correct AnswerverifiedShow Answer

Oceanic crust is denser than continental crust.

Correct AnswerverifiedTrue

Which best describes felsic igneous rock,such as granite and rhyolite?

Correct AnswerverifiedShow Answer

Which are associated with divergent plate boundaries?

Correct AnswerverifiedShow Answer

Which are the names that contrast molten rock beneath Earth's surface with molten rock on Earth's surface?

Correct AnswerverifiedShow Answer

Diagram and label the three types of plate boundaries.

Correct AnswerverifiedConvergent boundaries occur in areas of ...View AnswerShow Answer

Just eight natural elements make up over 98% of Earth's crust by weight.

Correct AnswerverifiedShow Answer

The deepest places in the ocean are those in which rifting occurs.

Correct AnswerverifiedShow Answer

Plate boundaries are associated with which of the following?

Correct AnswerverifiedShow Answer

What is sedimentary rock formed from the combined processes of weathering,erosion,transportation,deposition,lithification,and compaction of rock fragments of other rocks?

Correct AnswerverifiedShow Answer

Convergent plate boundaries occur in areas of seafloor spreading.

Correct AnswerverifiedShow Answer

Which drives the endogenic processes of the rock cycle?

Correct AnswerverifiedShow Answer

What type of rock forms from the solidification of molten material?

Correct AnswerverifiedShow Answer

Which is the continuous alteration of Earth materials from one rock type to another?

Correct AnswerverifiedShow Answer

In terms of dating of specific rocks,structures,or landscapes,numerical age refers to which of the following?

Correct AnswerverifiedShow Answer

Consider the age of the sea floor.Which of the following is correct?

Correct AnswerverifiedShow Answer

From which of the following is knowledge of Earth's interior mostly derived?

Correct AnswerverifiedC

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C

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True

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Convergent boundaries occur in areas of ...
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C