Exam 8: The Terrestrial Planets and Earths Moon

Describe the difference between seismic primary and secondary waves and why this difference makes them useful in probing the structure of the Earth's interior.

(Essay)

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Question 21

Which is NOT a reason that we suspect that the extinction of the dinosaurs was caused by a large impact by a large object?

(Multiple Choice)

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Question 22

All the terrestrial planets show evidence of disruptions due to tectonics occurring now or in the past.

(True/False)

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Question 23

The Mars rovers named Spirit and Opportunity found evidence in the chemical makeup of the rocks that proves Mars had liquid water on its surface in the past.

(True/False)

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Question 24

The dynamo theory says that a planet will have a strong magnetic field if it has:

(Multiple Choice)

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Question 25

Differentiation refers to materials that are separate based on their:

(Multiple Choice)

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Question 26

According to studies of impact cratering,which of these terrestrial objects has,on average,the oldest surface?

(Multiple Choice)

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Question 27

If a radioactive element has a half-life of 10,000 years,what fraction of it is left in a rock after 40,000 years?

(Multiple Choice)

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Question 28

Mars has a diameter that is approximately half that of Earth's.If the interiors of these planets are heated by radioactive decays,how does the heating rate of Mars' interior compare to that of Earth's?

(Multiple Choice)

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Question 29

Volcanoes on Earth typically occur in the middle of oceans where two tectonic plates are spreading apart.

(True/False)

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Question 30

The Moon has a diameter that is approximately one-fourth that of Earth.If these objects' interiors are heated by radioactive decays,and the total amount of energy in decays is proportional to the object's volume,then how does the amount of heat the Moon has compare to that of Earth?

(Multiple Choice)

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Question 31

What are the four main processes that shape the surfaces of the terrestrial planets?

(Essay)

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Question 32

The maria,the dark regions of the Moon's surface,are approximately 1 billion years younger than the rest of its surface.

(True/False)

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Question 33

Based on the assumption that a liquid,conducting core and rapid rotation are both required for a magnetic dynamo to operate,which terrestrial planets would you expect to have magnetic fields?

(Multiple Choice)

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Question 34

The interior of the Earth is differentiated because it cooled very quickly.

(True/False)

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Question 35

Which object would have the LARGEST impact if it were to strike the Earth?

(Multiple Choice)

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Question 36

The interior of the Earth is hot mainly because of the pressure induced by the weight of the material above it.

(True/False)

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Question 37

In the Earth's crust,lower density igneous rock such as _ make up the continents,and higher density volcanic rock such as _ make up the ocean floor.

(Multiple Choice)

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Question 38

Consider an external solar system in which there are three terrestrial planets.All are located far from other objects so tidal forces aren't significant.If planet A has a radius of 1 Earth radius,and planet B has a radius of 2 Earth radii,and planet C has a radius of 3 Earth radii,which planet has the highest chance of having at least a partially liquid core and a detectable magnetic field?

(Multiple Choice)

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Question 39

Continental drift occurs at a typical rate of a few:

(Multiple Choice)

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Question 40

Showing 21 - 40 of 82

Exam 8: The Terrestrial Planets and Earths Moon

Describe the difference between seismic primary and secondary waves and why this difference makes them useful in probing the structure of the Earth's interior.

Which is NOT a reason that we suspect that the extinction of the dinosaurs was caused by a large impact by a large object?

All the terrestrial planets show evidence of disruptions due to tectonics occurring now or in the past.

The Mars rovers named Spirit and Opportunity found evidence in the chemical makeup of the rocks that proves Mars had liquid water on its surface in the past.

The dynamo theory says that a planet will have a strong magnetic field if it has:

Differentiation refers to materials that are separate based on their:

According to studies of impact cratering,which of these terrestrial objects has,on average,the oldest surface?

If a radioactive element has a half-life of 10,000 years,what fraction of it is left in a rock after 40,000 years?

Mars has a diameter that is approximately half that of Earth's.If the interiors of these planets are heated by radioactive decays,how does the heating rate of Mars' interior compare to that of Earth's?

Volcanoes on Earth typically occur in the middle of oceans where two tectonic plates are spreading apart.

The Moon has a diameter that is approximately one-fourth that of Earth.If these objects' interiors are heated by radioactive decays,and the total amount of energy in decays is proportional to the object's volume,then how does the amount of heat the Moon has compare to that of Earth?

What are the four main processes that shape the surfaces of the terrestrial planets?

The maria,the dark regions of the Moon's surface,are approximately 1 billion years younger than the rest of its surface.

Based on the assumption that a liquid,conducting core and rapid rotation are both required for a magnetic dynamo to operate,which terrestrial planets would you expect to have magnetic fields?

The interior of the Earth is differentiated because it cooled very quickly.

Which object would have the LARGEST impact if it were to strike the Earth?

The interior of the Earth is hot mainly because of the pressure induced by the weight of the material above it.

In the Earth's crust,lower density igneous rock such as _________ make up the continents,and higher density volcanic rock such as _________ make up the ocean floor.

Continental drift occurs at a typical rate of a few:

Why Learn Astronomy

Patterns in the Skymotions of Earth

Motion of Astronomical Bodies

Gravity and Orbits

Light

The Tools of the Astronomer

The Birth and Evolution of Planetary Systems

Atmospheres of the Terrestrial Planets

Worlds of Gas and Liquid the Giant Planets

Planetary Adornments Moons and Rings

Dwarf Planets and Small Solar System Bodies

Taking the Measure of Stars

Our Starthe Sun

Star Formation and the Interstellar Medium

Evolution of Low-Mass Stars

Evolution of High-Mass Stars

Relativity and Black Holes

The Expanding Universe

Galaxies

The Milky Waya Normal Spiral Galaxy

Modern Cosmology

Large-Scale Structure in the Universe

Life

Filters

In the Earth's crust,lower density igneous rock such as _ make up the continents,and higher density volcanic rock such as _ make up the ocean floor.