Question 1

Which two geological processes appear to have been most important in shaping the present surface of Venus?

Accepted Answer

A) impacts and tectonics 
B) volcanoes and tectonics 
C) tectonics and erosion 
D) volcanoes and erosion 
E) impacts and volcanoes 
A) impacts and tectonics 
B) volcanoes and tectonics 
C) tectonics and erosion 
D) volcanoes and erosion 
E) impacts and volcanoes B

Question 2

Which of the following best describes the lunar maria?

Accepted Answer

A) frozen oceans of liquid water on the Moon 
B) mountainous regions on the Moon 
C) densely cratered regions on the Moon 
D) relatively smooth, flat plains on the Moon 
A) frozen oceans of liquid water on the Moon 
B) mountainous regions on the Moon 
C) densely cratered regions on the Moon 
D) relatively smooth, flat plains on the Moon D

Question 3

The presence of oxygen and ozone in Earth's atmosphere can be explained only through biology.

Accepted Answer

A) True 
 B)False  True

Question 4

The cores of the terrestrial worlds are made mostly of metal because .

Accepted Answer

A) metals sunk to the centers a long time ago when the interiors were molten throughout 
B) over billions of years, convection gradually brought dense metals downward to the core 
C) the core contained lots of radioactive elements that decayed into metals 
D) the terrestrial worlds as a whole are made mostly of metal 
A) metals sunk to the centers a long time ago when the interiors were molten throughout 
B) over billions of years, convection gradually brought dense metals downward to the core 
C) the core contained lots of radioactive elements that decayed into metals 
D) the terrestrial worlds as a whole are made mostly of metal

Question 5

What do we mean when we say that the terrestrial worlds underwent differentiation?

Accepted Answer

A) They lost interior heat to outer space. 
B) Their surfaces show a variety of different geological features resulting from different geological processes. 
C) When their interiors were molten, denser materials sank toward their centers and lighter materials rose toward their surfaces. 
D) The five terrestrial worlds all started similarly but ended up looking quite different. 
A) They lost interior heat to outer space. 
B) Their surfaces show a variety of different geological features resulting from different geological processes. 
C) When their interiors were molten, denser materials sank toward their centers and lighter materials rose toward their surfaces. 
D) The five terrestrial worlds all started similarly but ended up looking quite different.

Question 6

Why is Mars so much colder than the Earth?

Accepted Answer

A) because Mars is farther from the Sun 
B) because Mars has a much thinner, more diffuse atmosphere 
C) because Mars has a little less gravity than the Earth 
D) because the albedo of Mars is higher than the Earth 
A) because Mars is farther from the Sun 
B) because Mars has a much thinner, more diffuse atmosphere 
C) because Mars has a little less gravity than the Earth 
D) because the albedo of Mars is higher than the Earth

Question 7

What are some of the things that make Earth unique among the terrestrial planets?

Accepted Answer

It is the only planet with an oxygen- ri

Question 8

Under what circumstances can differentiation occur in a planet?

Accepted Answer

A) The planet must have an atmosphere. 
B) The planet must be made of both metal and rock. 
C) The planet must have a molten interior. 
D) The planet must have a rocky surface. 
E) The planet must be geologically active, that is, have volcanoes, planetquakes, and erosion from weather. 
A) The planet must have an atmosphere. 
B) The planet must be made of both metal and rock. 
C) The planet must have a molten interior. 
D) The planet must have a rocky surface. 
E) The planet must be geologically active, that is, have volcanoes, planetquakes, and erosion from weather.

Question 9

How does the size of a planet determine its internal temperature?

Accepted Answer

Size is the most important fac

Question 10

Which of the following show evidence of ancient river beds?

Accepted Answer

A) Mercury 
B) Venus 
C) the Moon 
D) Mars 
E) all of the above 
A) Mercury 
B) Venus 
C) the Moon 
D) Mars 
E) all of the above

Question 11

What are the conditions necessary for a terrestrial planet to have a strong magnetic field?

Accepted Answer

A) a rocky mantle only 
B) a molten metallic core only 
C) fast rotation only 
D) both a molten metallic core and reasonably fast rotation 
E) both a metal core and a rocky mantle 
A) a rocky mantle only 
B) a molten metallic core only 
C) fast rotation only 
D) both a molten metallic core and reasonably fast rotation 
E) both a metal core and a rocky mantle

Question 12

What kind of thermal radiation does the Earth emit?

Accepted Answer

A) infrared light 
B) visible light 
C) visible and ultraviolet light 
D) infrared and visible light 
E) infrared, visible, and ultraviolet light 
A) infrared light 
B) visible light 
C) visible and ultraviolet light 
D) infrared and visible light 
E) infrared, visible, and ultraviolet light

Question 13

Earth outgassed as much carbon dioxide as Venus, but it is locked up in the oceans and rocks.

Accepted Answer

A) True 
 B)False

Question 14

Describe the three sources of internal heat of the terrestrial planets.

Accepted Answer

Accretion is heat generated by the agglo

Question 15

Earth is habitable because of the greenhouse effect.

Accepted Answer

A) True 
 B)False

Question 16

Deep trenches in the ocean mark places where

Accepted Answer

A) plates slip sideways relative to one another. 
B) plates pull apart, leaving great rifts in the crust. 
C) one plate slides under another, returning older crust to the mantle. 
D) hot mantle material rises upward and spreads sideways, pushing the plates apart. 
E) plates push together, creating ocean mountain chains. 
A) plates slip sideways relative to one another. 
B) plates pull apart, leaving great rifts in the crust. 
C) one plate slides under another, returning older crust to the mantle. 
D) hot mantle material rises upward and spreads sideways, pushing the plates apart. 
E) plates push together, creating ocean mountain chains.

Question 17

Which of the following statements about the greenhouse effect is true?

Accepted Answer

A) A weak greenhouse effect operates on Mars. 
B) The burning of fossil fuels increases the greenhouse effect on Earth because of the release of carbon dioxide. 
C) One result of an increased greenhouse effect on Earth may be an increased number of severe storms. 
D) Without the naturally occurring greenhouse effect, Earth would be too cold to have liquid oceans. 
E) All of the above are true. 
A) A weak greenhouse effect operates on Mars. 
B) The burning of fossil fuels increases the greenhouse effect on Earth because of the release of carbon dioxide. 
C) One result of an increased greenhouse effect on Earth may be an increased number of severe storms. 
D) Without the naturally occurring greenhouse effect, Earth would be too cold to have liquid oceans. 
E) All of the above are true.

Question 18

Evidence for Life: Imagine that recent advances in technology have allowed the discovery of several very low mass (much less than the mass of Jupiter)planets around nearby, Sun- like stars. Assume all that is known about these planets is their mass, their size, and the characteristics of their orbits (i.e., semi- major axis and eccentricity). You are asked to speculate on whether or not life (similar to that on Earth)might exist on these planets. How would you answer this question? You are then asked what new observations we might make to help settle this question. How would you respond?

Accepted Answer

The discovery of low mass planets around

Question 19

If the polar ice decreases, what would happen, and why?

Accepted Answer

A) warming, because more sunlight is reflected 
B) warming, because more sunlight is absorbed 
C) cooling, because more sunlight is reflected 
D) cooling, because melted ice cools things off 
A) warming, because more sunlight is reflected 
B) warming, because more sunlight is absorbed 
C) cooling, because more sunlight is reflected 
D) cooling, because melted ice cools things off

Question 20

Why does Mars have more extreme seasons than Earth?

Accepted Answer

A) because it has a more eccentric orbit 
B) because it is farther from the Sun 
C) because it has more carbon dioxide in its atmosphere 
D) because it has a larger axis tilt 
E) all of the above 
A) because it has a more eccentric orbit 
B) because it is farther from the Sun 
C) because it has more carbon dioxide in its atmosphere 
D) because it has a larger axis tilt 
E) all of the above

Which two geological processes appear to have been most important in shaping the present surface of Venus?

Which of the following best describes the lunar maria?

The presence of oxygen and ozone in Earth's atmosphere can be explained only through biology.

The cores of the terrestrial worlds are made mostly of metal because .

What do we mean when we say that the terrestrial worlds underwent differentiation?

Why is Mars so much colder than the Earth?

What are some of the things that make Earth unique among the terrestrial planets?

Under what circumstances can differentiation occur in a planet?

How does the size of a planet determine its internal temperature?

Which of the following show evidence of ancient river beds?

What are the conditions necessary for a terrestrial planet to have a strong magnetic field?

What kind of thermal radiation does the Earth emit?

Earth outgassed as much carbon dioxide as Venus, but it is locked up in the oceans and rocks.

Describe the three sources of internal heat of the terrestrial planets.

Earth is habitable because of the greenhouse effect.

Deep trenches in the ocean mark places where

Which of the following statements about the greenhouse effect is true?

If the polar ice decreases, what would happen, and why?

Why does Mars have more extreme seasons than Earth?

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

Which two geological processes appear to have been most important in shaping the present surface of Venus?

Which of the following best describes the lunar maria?

The presence of oxygen and ozone in Earth's atmosphere can be explained only through biology.

The cores of the terrestrial worlds are made mostly of metal because .

What do we mean when we say that the terrestrial worlds underwent differentiation?

Why is Mars so much colder than the Earth?

What are some of the things that make Earth unique among the terrestrial planets?

Under what circumstances can differentiation occur in a planet?

How does the size of a planet determine its internal temperature?

Which of the following show evidence of ancient river beds?

What are the conditions necessary for a terrestrial planet to have a strong magnetic field?

What kind of thermal radiation does the Earth emit?

Earth outgassed as much carbon dioxide as Venus, but it is locked up in the oceans and rocks.

Describe the three sources of internal heat of the terrestrial planets.

Earth is habitable because of the greenhouse effect.

Deep trenches in the ocean mark places where

Which of the following statements about the greenhouse effect is true?

If the polar ice decreases, what would happen, and why?

Why does Mars have more extreme seasons than Earth?

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