Question 1

The core, mantle, and crust of a planet are defined by differences in their

Accepted Answer

A) density. 
B) geological activity. 
C) strength. 
D) temperature. 
A) density. 
B) geological activity. 
C) strength. 
D) temperature.

Question 2

Why does Earth have an ultraviolet- absorbing stratosphere, while Venus and Mars do not?

Accepted Answer

Life and oxygen also explain the presenc

Question 3

Why does Earth have so much more oxygen (O₂)than Venus or Mars?

Accepted Answer

The answer to this question is simply th

Question 4

The reason that small planets tend to lose interior heat faster than larger planets is essentially the same as the reason that .

Accepted Answer

A) thunderstorms tend to form on hot summer days 
B) gas bubbles form and rise upward in boiling water 
C) a large baked potato takes longer to cool than a small baked potato 
D) Earth contains more metal than the Moon 
A) thunderstorms tend to form on hot summer days 
B) gas bubbles form and rise upward in boiling water 
C) a large baked potato takes longer to cool than a small baked potato 
D) Earth contains more metal than the Moon

Question 5

Which of the terrestrial worlds has the strongest magnetic field?

Accepted Answer

A) the Moon 
B) Mars 
C) Venus 
D) Earth 
E) Mercury 
A) the Moon 
B) Mars 
C) Venus 
D) Earth 
E) Mercury

Question 6

How did the lunar maria form?

Accepted Answer

A) The maria are the result of gradual erosion by micrometeorites striking the Moon. 
B) Large impacts fractured the Moon's lithosphere, allowing lava to fill the impact basins. 
C) Volatiles escaping from the Moon's interior heated and eroded the surface in the regions of the maria. 
D) The giant impact that created the Moon left smooth areas that we call the maria. 
E) The early bombardment created heat that melted the lunar surface in the regions of the maria. 
A) The maria are the result of gradual erosion by micrometeorites striking the Moon. 
B) Large impacts fractured the Moon's lithosphere, allowing lava to fill the impact basins. 
C) Volatiles escaping from the Moon's interior heated and eroded the surface in the regions of the maria. 
D) The giant impact that created the Moon left smooth areas that we call the maria. 
E) The early bombardment created heat that melted the lunar surface in the regions of the maria.

Question 7

Why does Earth have so little carbon dioxide in its atmosphere compared to Venus?

Accepted Answer

A) Chemical reactions turned Earth's carbon dioxide into nitrogen. 
B) Earth has just as much carbon dioxide as Venus, but most of it is locked up in carbonate rocks rather than being free in the atmosphere. 
C) Earth once had a lot of carbon dioxide, but it was lost to space during the heavy bombardment early in our solar system's history. 
D) Earth's volcanoes outgassed far less carbon dioxide than those on Venus. 
A) Chemical reactions turned Earth's carbon dioxide into nitrogen. 
B) Earth has just as much carbon dioxide as Venus, but most of it is locked up in carbonate rocks rather than being free in the atmosphere. 
C) Earth once had a lot of carbon dioxide, but it was lost to space during the heavy bombardment early in our solar system's history. 
D) Earth's volcanoes outgassed far less carbon dioxide than those on Venus.

Question 8

The three principal sources of the internal heat of terrestrial planets are

Accepted Answer

A) accretion, differentiation, and radioactivity. 
B) convection, differentiation, and eruption. 
C) conduction, convection, and eruption. 
D) accretion, differentiation, and eruption. 
E) conduction, differentiation, and accretion. 
A) accretion, differentiation, and radioactivity. 
B) convection, differentiation, and eruption. 
C) conduction, convection, and eruption. 
D) accretion, differentiation, and eruption. 
E) conduction, differentiation, and accretion.

Question 9

Earth's atmosphere contains only small amounts of carbon dioxide because

Accepted Answer

A) carbon dioxide dissolves in water, and most of it is now contained in the oceans and carbonate rocks. 
B) Earth doesn't have as strong a greenhouse effect as is present on Venus. 
C) most of the carbon dioxide was lost during the age of bombardment. 
D) the Earth's volcanoes did not outgas as much carbon dioxide as those on Venus and Mars. 
E) chemical reactions with other gases destroyed the carbon dioxide and replaced it with the nitrogen that is in the atmosphere now. 
A) carbon dioxide dissolves in water, and most of it is now contained in the oceans and carbonate rocks. 
B) Earth doesn't have as strong a greenhouse effect as is present on Venus. 
C) most of the carbon dioxide was lost during the age of bombardment. 
D) the Earth's volcanoes did not outgas as much carbon dioxide as those on Venus and Mars. 
E) chemical reactions with other gases destroyed the carbon dioxide and replaced it with the nitrogen that is in the atmosphere now.

Question 10

The greenhouse effect makes Earth warmer than it would be otherwise by about

Accepted Answer

A) 15 K. 
B) 30 K. 
C) - 16 K. 
D) There is no greenhouse effect. 
A) 15 K. 
B) 30 K. 
C) - 16 K. 
D) There is no greenhouse effect.

Question 11

Without greenhouse gases, Earth's surface would be frozen over.

Accepted Answer

A) True 
 B)False

Question 12

If the Earth rotated much more slowly, which of the following would be a consequence of that?

Accepted Answer

A) Seasons would be more extreme. 
B) Seasons would last longer. 
C) Days would get hotter and nights would get colder. 
D) Days would be shorter. 
A) Seasons would be more extreme. 
B) Seasons would last longer. 
C) Days would get hotter and nights would get colder. 
D) Days would be shorter.

Question 13

Which of the following worlds has the most substantial atmosphere?

Accepted Answer

A) Mercury 
B) the Moon 
C) Mars 
D) Venus 
E) Earth 
A) Mercury 
B) the Moon 
C) Mars 
D) Venus 
E) Earth

The core, mantle, and crust of a planet are defined by differences in their

Why does Earth have an ultraviolet- absorbing stratosphere, while Venus and Mars do not?

Why does Earth have so much more oxygen (O₂)than Venus or Mars?

The reason that small planets tend to lose interior heat faster than larger planets is essentially the same as the reason that .

Which of the terrestrial worlds has the strongest magnetic field?

How did the lunar maria form?

Why does Earth have so little carbon dioxide in its atmosphere compared to Venus?

The three principal sources of the internal heat of terrestrial planets are

Earth's atmosphere contains only small amounts of carbon dioxide because

The greenhouse effect makes Earth warmer than it would be otherwise by about

Without greenhouse gases, Earth's surface would be frozen over.

If the Earth rotated much more slowly, which of the following would be a consequence of that?

Which of the following worlds has the most substantial atmosphere?

A Modern View of the Universe

Discovering the Universe for Yourself

The Science of Astronomy

Making Sense of the Universe: Understanding Motion, Energy, and Gravity

Light: the Cosmic Messenger

Formation of the Solar System

Jovian Planet System

Asteroids, Comets, and Dwarf Planets: Their Nature, Orbits, and Impacts

Other Planetary Systems: the New Science of Distant Worlds

Our Star

Surveying the Stars

Star Stuff

The Bizarre Stellar Graveyard

Our Galaxy

A Universe of Galaxies

The Birth of the Universe

Dark Matter, Dark Energy, and the Fate of the Universe

Life in the Universe

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Exam 7: Earth and the Terrestrial Worlds

The core, mantle, and crust of a planet are defined by differences in their

Why does Earth have an ultraviolet- absorbing stratosphere, while Venus and Mars do not?

Why does Earth have so much more oxygen (O₂)than Venus or Mars?

The reason that small planets tend to lose interior heat faster than larger planets is essentially the same as the reason that .

Which of the terrestrial worlds has the strongest magnetic field?

How did the lunar maria form?

Why does Earth have so little carbon dioxide in its atmosphere compared to Venus?

The three principal sources of the internal heat of terrestrial planets are

Earth's atmosphere contains only small amounts of carbon dioxide because

The greenhouse effect makes Earth warmer than it would be otherwise by about

Without greenhouse gases, Earth's surface would be frozen over.

If the Earth rotated much more slowly, which of the following would be a consequence of that?

Which of the following worlds has the most substantial atmosphere?

A Modern View of the Universe

Discovering the Universe for Yourself

The Science of Astronomy

Making Sense of the Universe: Understanding Motion, Energy, and Gravity

Light: the Cosmic Messenger

Formation of the Solar System

Jovian Planet System

Asteroids, Comets, and Dwarf Planets: Their Nature, Orbits, and Impacts

Other Planetary Systems: the New Science of Distant Worlds

Our Star

Surveying the Stars

Star Stuff

The Bizarre Stellar Graveyard

Our Galaxy

A Universe of Galaxies

The Birth of the Universe

Dark Matter, Dark Energy, and the Fate of the Universe

Life in the Universe

Filters