Question 1

In what ways do the magnetic fields of both Uranus and Neptune defy the conventional Dynamo Theory for planetary magnetic fields?

Accepted Answer

The planet's rotation,as the word dynamo

Question 2

At the poles of Uranus,there are ________ years of constant daylight,then the same length of time of constant darkness.

Accepted Answer

The answer of At the poles of Uranus,there are ________...

Question 3

Why are the moons and rings of Uranus and Neptune believed to be dark?

Accepted Answer

Radiation striking ice produce

Question 4

Unlike Jupiter and Saturn,at Uranus and Neptune the ________ rotates the slowest.

Accepted Answer

The answer of Unlike Jupiter and Saturn,at Uranus and Neptune...

Question 5

Neptune was discovered due to irregularities in Uranus' orbit.At closest approach,these two planets are about 10 AU apart.
a)What is the force of gravity between these two objects? 
b)How does that compare to the force of gravity between the Sun and Uranus (approximately 20 AU from the Sun)?

Accepted Answer

a)F = G M m / d² = 6.7 × 10⁻¹¹ m³ kg⁻¹ s

Question 6

The rings of Neptune:

Accepted Answer

A)  were confirmed by the Voyager 2 in 1989. 
B)  number five, with three narrow, two more diffuse. 
C)  all lie within Neptune's Roche Limit. 
D)  often appear as clumpy ring arcs, rather than complete and symmetrical. 
E)  All of these are correct. 
A)  were confirmed by the Voyager 2 in 1989. 
B)  number five, with three narrow, two more diffuse. 
C)  all lie within Neptune's Roche Limit. 
D)  often appear as clumpy ring arcs, rather than complete and symmetrical. 
E)  All of these are correct.

Question 7

In terms of axial tilt,which of the jovians shows us the largest inclination?

Accepted Answer

A)  Jupiter 
B)  Saturn 
C)  Uranus 
D)  Neptune 
E)  Pluto 
A)  Jupiter 
B)  Saturn 
C)  Uranus 
D)  Neptune 
E)  Pluto

Question 8

Changes in the predicted motion of Uranus led to the search for an eighth planet.

Accepted Answer

A) True 
 B)False

Question 9

The planet Neptune is:

Accepted Answer

A)  easily visible with the naked eye. 
B)  barely visible with the naked eye. 
C)  visible with at least small telescopes or binoculars. 
D)  only visible with a large, high-quality telescope. 
E)  only visible with a space-based telescope. 
A)  easily visible with the naked eye. 
B)  barely visible with the naked eye. 
C)  visible with at least small telescopes or binoculars. 
D)  only visible with a large, high-quality telescope. 
E)  only visible with a space-based telescope.

Question 10

The visual appearance of Neptune is much bluer than Uranus.

Accepted Answer

A) True 
 B)False

Question 11

Neptune's moon Triton appears to have a nearly uncratered surface.Explain.

Accepted Answer

There has been a large amount of surface

Question 12

The Great Dark Spot on Neptune is probably as stable as Jupiter's famed Great Red Spot.

Accepted Answer

A) True 
 B)False

Question 13

We see differential rotation at Uranus and Neptune such that the equator is moving slower than higher latitudes.

Accepted Answer

A) True 
 B)False

Question 14

What is the prediction for the future of Triton?

Accepted Answer

A)  It will provide the raw material for a future Neptunian ring. 
B)  It will develop active volcanoes as Neptune's tidal stresses become greater. 
C)  It will crash into Nereid when the smaller moon comes too close. 
D)  Its orbit, while retrograde, is very stable and will not change. 
E)  Its retrograde orbit will throw it back out into the Kuiper Belt again, with Pluto. 
A)  It will provide the raw material for a future Neptunian ring. 
B)  It will develop active volcanoes as Neptune's tidal stresses become greater. 
C)  It will crash into Nereid when the smaller moon comes too close. 
D)  Its orbit, while retrograde, is very stable and will not change. 
E)  Its retrograde orbit will throw it back out into the Kuiper Belt again, with Pluto.

Question 15

Which three played a role in the finding of Neptune?

Accepted Answer

A)  Herschel, Hubble, and Einstein 
B)  Newton, Einstein, and Tombaugh 
C)  Adams, Leverrier, and Galle 
D)  Bode, Herschel, and Fraunhofer 
E)  Shapley, Hubble, and Whipple 
A)  Herschel, Hubble, and Einstein 
B)  Newton, Einstein, and Tombaugh 
C)  Adams, Leverrier, and Galle 
D)  Bode, Herschel, and Fraunhofer 
E)  Shapley, Hubble, and Whipple

Question 16

The planet whose pole was facing the Sun when Voyager 2 approached in 1986 was:

Accepted Answer

A)  Jupiter. 
B)  Saturn. 
C)  Uranus. 
D)  Neptune. 
E)  Mars. 
A)  Jupiter. 
B)  Saturn. 
C)  Uranus. 
D)  Neptune. 
E)  Mars.

Question 17

In strength,the magnetic fields of Uranus and Neptune are:

Accepted Answer

A)  very different, with flopped over Uranus having no field, and Neptune a strong one. 
B)  similar, with both about 100 times stronger than our own. 
C)  even stronger than that of Jupiter. 
D)  perfect fits for the Dynamo theory. 
E)  like Jupiter and Saturn, due to mantles of liquid metallic hydrogen. 
A)  very different, with flopped over Uranus having no field, and Neptune a strong one. 
B)  similar, with both about 100 times stronger than our own. 
C)  even stronger than that of Jupiter. 
D)  perfect fits for the Dynamo theory. 
E)  like Jupiter and Saturn, due to mantles of liquid metallic hydrogen.

Question 18

Because the poles of Uranus spend 42 years in darkness,the temperatures between the northern and southern hemispheres of Uranus differ by as much as hundreds of Kelvins,depending on where Uranus is in its orbit.

Accepted Answer

A) True 
 B)False

Question 19

Unlike the atmospheres of Jupiter and Saturn,Uranus and Neptune have almost no:

Accepted Answer

A)  Hydrogen. 
B)  Helium. 
C)  Methane. 
D)  Ammonia. 
E)  Nitrogen. 
A)  Hydrogen. 
B)  Helium. 
C)  Methane. 
D)  Ammonia. 
E)  Nitrogen.

Question 20

In 1846,Johann Galle found Neptune:

Accepted Answer

A)  a few degrees from where it was predicted to be. 
B)  after many years of searching for it. 
C)  exactly where he predicted it would be. 
D)  using just a pair of binoculars. 
E)  using grossly inaccurate star charts. 
A)  a few degrees from where it was predicted to be. 
B)  after many years of searching for it. 
C)  exactly where he predicted it would be. 
D)  using just a pair of binoculars. 
E)  using grossly inaccurate star charts.

Exam 13: Uranus and Neptune: The Outer Worlds of the Solar System

In what ways do the magnetic fields of both Uranus and Neptune defy the conventional Dynamo Theory for planetary magnetic fields?

At the poles of Uranus,there are ________ years of constant daylight,then the same length of time of constant darkness.

Why are the moons and rings of Uranus and Neptune believed to be dark?

Unlike Jupiter and Saturn,at Uranus and Neptune the ________ rotates the slowest.

Neptune was discovered due to irregularities in Uranus' orbit.At closest approach,these two planets are about 10 AU apart. a)What is the force of gravity between these two objects? b)How does that compare to the force of gravity between the Sun and Uranus (approximately 20 AU from the Sun)?

The rings of Neptune:

In terms of axial tilt,which of the jovians shows us the largest inclination?

Changes in the predicted motion of Uranus led to the search for an eighth planet.

The planet Neptune is:

The visual appearance of Neptune is much bluer than Uranus.

Neptune's moon Triton appears to have a nearly uncratered surface.Explain.

The Great Dark Spot on Neptune is probably as stable as Jupiter's famed Great Red Spot.

We see differential rotation at Uranus and Neptune such that the equator is moving slower than higher latitudes.

What is the prediction for the future of Triton?

Which three played a role in the finding of Neptune?

The planet whose pole was facing the Sun when Voyager 2 approached in 1986 was:

In strength,the magnetic fields of Uranus and Neptune are:

Because the poles of Uranus spend 42 years in darkness,the temperatures between the northern and southern hemispheres of Uranus differ by as much as hundreds of Kelvins,depending on where Uranus is in its orbit.

Unlike the atmospheres of Jupiter and Saturn,Uranus and Neptune have almost no:

In 1846,Johann Galle found Neptune:

Charting the Heavens: The Foundations of Astronomy

The Copernican Revolution: The Birth of Modern Science

Radiation: Information from the Cosmos

Spectroscopy: The Inner Workings of Atoms

Telescopes: The Tools of Astronomy

The Solar System: Comparative Planetology and Formation Models

Earth: Our Home in Space

The Moon and Mercury: Scorched and Battered Worlds

Venus: Earth's Sister Planet

Mars: A Near Miss for Life?

Jupiter: Giant of the Solar System

Saturn: Spectacular Rings and Mysterious Moons

Solar System Debris: Keys to Our Origin

Exoplanets: Planetary Systems Beyond Our Own

The Sun: Our Parent Star

The Stars: Giants,Dwarfs,and the Main Sequence

The Interstellar Medium: Gas and Dust among the Stars

Star Formation: A Traumatic Birth

Stellar Evolution: The Life and Death of a Star

Stellar Explosions: Novae,Supernovae,and the Formation of the Elements

Neutron Stars and Black Holes: Strange States of Matter

The Milky Way Galaxy: A Spiral in Space

Galaxies: Building Blocks of the Universe

Galaxies and Dark Matter: The Large-Scale Structure of the Cosmos

Cosmology: The Big Bang and the Fate of the Universe

The Early Universe: Toward the Beginning of Time

Life in the Universe: Are We Alone?

Filters