Question 1

Describe the possible history of a typical Plutino as astronomers now believe it occurred.

Accepted Answer

​ More than a hundred of the Kuiper Belt Objects are caught with Pluto in a 3:2 resonance with Neptune. That is, they orbit the Sun twice while Neptune orbits three times. This subset of KBOs have been named plutinos. The plutinos formed in the outer solar nebula, but how did they get caught in resonances with Neptune? As you learned earlier, some models of the formation of the planets suggest that Uranus and Neptune may have migrated outward early in the Solar System's history. As Neptune moved farther from the Sun, its orbital resonances could have swept up small objects like a kind of planetary snow plow. The plutinos are caught in the 3:2 resonance, and other KBOs are caught in other resonances. The evidence appears to support those models which predict that Uranus and Neptune migrated outward. The migration of the outer planets would have dramatically upset the motion of some of these Kuiper Belt Objects, and some could have been thrown inward where they could interact with the Jovian planets. Some of those objects may have been captured as moons, and astronomers wonder if moons such as Neptune's Triton could have started life as KBOs. Other objects may have hit bodies in the inner Solar System and caused the late heavy bombardment episode especially evident on the surface of Earth's Moon.

Question 2

Small ____________ can confine sections of Saturn's rings to produce sharp edges or narrow ringlets.

Accepted Answer

shepherd satellites,or,moons

Question 3

Though Titan has a small mass , it is able to retain an atmosphere because it

Accepted Answer

A)  is very cold. 
B)  is very hot 
C)  has an iron surface. 
D)  attracts gas from the solar wind. 
A)  is very cold. 
B)  is very hot 
C)  has an iron surface. 
D)  attracts gas from the solar wind. A

Question 4

In which corner of the figure above is Uranus moving from fall to winter in the southern hemisphere?

Accepted Answer

A)  upper left 
B)  upper right 
C)  lower left 
D)  lower right 
A)  upper left 
B)  upper right 
C)  lower left 
D)  lower right

Question 5

Saturn's atmosphere

Accepted Answer

A)  has more distinctive zones and belts than Jupiter's. 
B)  is rich in free oxygen. 
C)  is hazy above the clouds. 
D)  has more distinctive zones and belts than Jupiter's, is rich in free oxygen, and is hazy above the clouds. 
E)  does not have more distinctive zones and belts than Jupiter's, is not rich in free oxygen, and is not hazy above the clouds. 
A)  has more distinctive zones and belts than Jupiter's. 
B)  is rich in free oxygen. 
C)  is hazy above the clouds. 
D)  has more distinctive zones and belts than Jupiter's, is rich in free oxygen, and is hazy above the clouds. 
E)  does not have more distinctive zones and belts than Jupiter's, is not rich in free oxygen, and is not hazy above the clouds.

Question 6

Jovian planets are found in the inner solar system.

Accepted Answer

A) True 
 B)False

Question 7

In the visual wavelength image shown above, a blue oval is labeled. This blue oval is a rotating ____________.

Accepted Answer

The answer of   
In the visual wavelength image...

Question 8

The rotation of Uranus is peculiar in that

Accepted Answer

A)  it is very slow, nearly zero. 
B)  it is much faster than is typical for Jovian planets. 
C)  it first turns in one direction, then stops and turns in the opposite direction. 
D)  the axis is nearly parallel to the plane of its orbit. 
A)  it is very slow, nearly zero. 
B)  it is much faster than is typical for Jovian planets. 
C)  it first turns in one direction, then stops and turns in the opposite direction. 
D)  the axis is nearly parallel to the plane of its orbit.

Question 9

Compared to the magnetosphere of Earth, the magnetosphere of Saturn is shown in the picture above.

Accepted Answer

A) True 
 B)False

Question 10

What is the significance of the colors of Uranus and Neptune?

Accepted Answer

Traces of methane ab

Question 11

Jupiter's shape is ____________ because it is rotating rapidly and has a low density.

Accepted Answer

The answer of Jupiter's shape is ____________ because it is...

Question 12

Choose the correct pair of words to make a correct statement: Water condenses at a __ (hotter/cooler) ___ temperature and a ___ (lower/higher)__ altitude compared to ammonia.

Accepted Answer

The answer of   
Choose the correct pair of...

Question 13

How does the magnetic field of Uranus differ from that of Jupiter and Saturn?

Accepted Answer

It is high

Question 14

____________________ discovered Uranus using a telescope that he built himself.

Accepted Answer

The answer of ____________________ discovered Uranus using a telescope that...

Question 15

Europa has few craters because

Accepted Answer

A)  it is protected from impacts by Jupiter's gravity. 
B)  it does not have a solid surface. 
C)  it has erased craters nearly as fast as they have formed. 
D)  its surface is not strong enough to support craters. 
E)  it keeps one face always pointed toward Jupiter which screens it from incoming meteorites. 
A)  it is protected from impacts by Jupiter's gravity. 
B)  it does not have a solid surface. 
C)  it has erased craters nearly as fast as they have formed. 
D)  its surface is not strong enough to support craters. 
E)  it keeps one face always pointed toward Jupiter which screens it from incoming meteorites.

Question 16

In what way is the rocky material of Jupiter's core different from the rocks found on Earth?

Accepted Answer

A)  It is much cooler because Jupiter is further from the Sun. 
B)  It contains more liquid water. 
C)  It is much hotter and denser because of the extreme pressure at the core of Jupiter. 
D)  It is not composed of iron and nickel because this material will float of the surface. 
E)  It is composed entirely of ices that have frozen into a large rock-like structure. 
A)  It is much cooler because Jupiter is further from the Sun. 
B)  It contains more liquid water. 
C)  It is much hotter and denser because of the extreme pressure at the core of Jupiter. 
D)  It is not composed of iron and nickel because this material will float of the surface. 
E)  It is composed entirely of ices that have frozen into a large rock-like structure.

Question 17

Which of the following are found on Triton?

Accepted Answer

A)  craters 
B)  flooded basins 
C)  atmospheric clouds 
D)  a thick nitrogen atmosphere 
E)  craters, flooded basins, atmospheric clouds, and a thick nitrogen atmosphere 
A)  craters 
B)  flooded basins 
C)  atmospheric clouds 
D)  a thick nitrogen atmosphere 
E)  craters, flooded basins, atmospheric clouds, and a thick nitrogen atmosphere

Question 18

On the night side and in the northern hemisphere of this Galilean moon is an eruption of small particles that scatter the light, as shown in this image that combines visual and infrared data. Based upon this information, which Galilean moon is in the image?

Accepted Answer

A)  Io 
B)  Europa 
C)  Ganymede 
D)  Callisto 
A)  Io 
B)  Europa 
C)  Ganymede 
D)  Callisto

Question 19

The rings of ____________ were discovered when they occulted a star.

Accepted Answer

The answer of The rings of ____________ were discovered when...

Question 20

Pluto's density is 1.8 g/cm3. Iron is about 5 g/cm3. Rock is about 3 g/cm3. Ice or water is 1.0 g/cm3. This implies that

Accepted Answer

A)  Pluto has a large iron-nickel core. 
B)  Pluto is about 35% water ice and 65% rocky material. 
C)  Pluto is all rock. 
D)  Pluto is all water or water ice. 
A)  Pluto has a large iron-nickel core. 
B)  Pluto is about 35% water ice and 65% rocky material. 
C)  Pluto is all rock. 
D)  Pluto is all water or water ice.

Describe the possible history of a typical Plutino as astronomers now believe it occurred.

Small ____________ can confine sections of Saturn's rings to produce sharp edges or narrow ringlets.

Though Titan has a small mass , it is able to retain an atmosphere because it

In which corner of the figure above is Uranus moving from fall to winter in the southern hemisphere?

Saturn's atmosphere

Jovian planets are found in the inner solar system.

In the visual wavelength image shown above, a blue oval is labeled. This blue oval is a rotating ____________.

The rotation of Uranus is peculiar in that

Compared to the magnetosphere of Earth, the magnetosphere of Saturn is shown in the picture above.

What is the significance of the colors of Uranus and Neptune?

Jupiter's shape is ____________ because it is rotating rapidly and has a low density.

Choose the correct pair of words to make a correct statement: Water condenses at a (hotter/cooler) _ temperature and a _ (lower/higher) altitude compared to ammonia.

How does the magnetic field of Uranus differ from that of Jupiter and Saturn?

____________________ discovered Uranus using a telescope that he built himself.

Europa has few craters because

In what way is the rocky material of Jupiter's core different from the rocks found on Earth?

Which of the following are found on Triton?

On the night side and in the northern hemisphere of this Galilean moon is an eruption of small particles that scatter the light, as shown in this image that combines visual and infrared data. Based upon this information, which Galilean moon is in the image?

The rings of ____________ were discovered when they occulted a star.

Pluto's density is 1.8 g/cm³. Iron is about 5 g/cm³. Rock is about 3 g/cm³. Ice or water is 1.0 g/cm³. This implies that

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

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Exam 18: The Outer Solar System

Describe the possible history of a typical Plutino as astronomers now believe it occurred.

Small ____________ can confine sections of Saturn's rings to produce sharp edges or narrow ringlets.

Though Titan has a small mass , it is able to retain an atmosphere because it

In which corner of the figure above is Uranus moving from fall to winter in the southern hemisphere?

Saturn's atmosphere

Jovian planets are found in the inner solar system.

In the visual wavelength image shown above, a blue oval is labeled. This blue oval is a rotating ____________.

The rotation of Uranus is peculiar in that

Compared to the magnetosphere of Earth, the magnetosphere of Saturn is shown in the picture above.

What is the significance of the colors of Uranus and Neptune?

Jupiter's shape is ____________ because it is rotating rapidly and has a low density.

Choose the correct pair of words to make a correct statement: Water condenses at a __ (hotter/cooler) ___ temperature and a ___ (lower/higher)__ altitude compared to ammonia.

How does the magnetic field of Uranus differ from that of Jupiter and Saturn?

____________________ discovered Uranus using a telescope that he built himself.

Europa has few craters because

In what way is the rocky material of Jupiter's core different from the rocks found on Earth?

Which of the following are found on Triton?

On the night side and in the northern hemisphere of this Galilean moon is an eruption of small particles that scatter the light, as shown in this image that combines visual and infrared data. Based upon this information, which Galilean moon is in the image?

The rings of ____________ were discovered when they occulted a star.

Pluto's density is 1.8 g/cm3. Iron is about 5 g/cm3. Rock is about 3 g/cm3. Ice or water is 1.0 g/cm3. This implies that

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Choose the correct pair of words to make a correct statement: Water condenses at a (hotter/cooler) _ temperature and a _ (lower/higher) altitude compared to ammonia.

Pluto's density is 1.8 g/cm³. Iron is about 5 g/cm³. Rock is about 3 g/cm³. Ice or water is 1.0 g/cm³. This implies that