Question 1

Which of the following is NOT geologically active?

Accepted Answer

A)  Callisto 
B)  Triton 
C)  Enceladus 
D)  Io 
A)  Callisto 
B)  Triton 
C)  Enceladus 
D)  Io

Question 2

Why do we suspect that the inner planets do not have rings?

Accepted Answer

They lack small moons to act a

Question 3

Explain how Uranus's rings were first discovered.

Accepted Answer

They were first discovered thr

Question 4

Why do astronomers believe that Saturn has such prominent rings,and does the observed total mass in the ring system support this theory?

Accepted Answer

In the past,a moon must have passed with

Question 5

Which of the following is NOT a characteristic of regular moons?

Accepted Answer

A)  They revolve around their planets in the same direction as the planets rotate. 
B)  They have orbits that lie nearly in the planets' equatorial plane. 
C)  They are usually tidally locked to their parent planets. 
D)  They are much smaller than all of the known planets. 
A)  They revolve around their planets in the same direction as the planets rotate. 
B)  They have orbits that lie nearly in the planets' equatorial plane. 
C)  They are usually tidally locked to their parent planets. 
D)  They are much smaller than all of the known planets.

Question 6

Rings that project to look like they are intertwined (but are not)are caused by

Accepted Answer

A)  new laws of physics. 
B)  ring material on highly elliptical orbits. 
C)  the gravitational influence of small moons. 
D)  electromagnetic interaction of the rings with Saturn's magnetic field. 
A)  new laws of physics. 
B)  ring material on highly elliptical orbits. 
C)  the gravitational influence of small moons. 
D)  electromagnetic interaction of the rings with Saturn's magnetic field.

Question 7

Two years after first being observed,astronomers reported that Saturn's rings vanished.What happened to them?

Accepted Answer

A)  The old ring system dissipated,and since then a new one has formed. 
B)  The rings lined up with Earth,and they were too thin to be observed. 
C)  Most telescopes used hundreds of years ago couldn't adequately resolve the ring system. 
D)  Astronomers were looking at the wrong planet,leading to the chance discovery of Uranus. 
A)  The old ring system dissipated,and since then a new one has formed. 
B)  The rings lined up with Earth,and they were too thin to be observed. 
C)  Most telescopes used hundreds of years ago couldn't adequately resolve the ring system. 
D)  Astronomers were looking at the wrong planet,leading to the chance discovery of Uranus.

Question 8

Which property of a moon might lead you to believe it was a captured asteroid?

Accepted Answer

A)  It is tidally locked. 
B)  Its orbital axis is tilted by 10 degrees compared to the planet's rotational axis. 
C)  It rotates clockwise around the planet when viewed from the planet's north pole. 
D)  Its surface is very smooth and lacks craters. 
A)  It is tidally locked. 
B)  Its orbital axis is tilted by 10 degrees compared to the planet's rotational axis. 
C)  It rotates clockwise around the planet when viewed from the planet's north pole. 
D)  Its surface is very smooth and lacks craters.

Which of the following is NOT geologically active?

Why do we suspect that the inner planets do not have rings?

Explain how Uranus's rings were first discovered.

Why do astronomers believe that Saturn has such prominent rings,and does the observed total mass in the ring system support this theory?

Which of the following is NOT a characteristic of regular moons?

Rings that project to look like they are intertwined (but are not)are caused by

Two years after first being observed,astronomers reported that Saturn's rings vanished.What happened to them?

Which property of a moon might lead you to believe it was a captured asteroid?

Why Learn Astronomy

Patterns in the Skymotions of Earth

Gravity and Orbitsa Celestial Ballet

Light

The Tools of the Astronomer

The Birth and Evolution of Planetary Systems

The Terrestrial Planets and Earths Moon

Atmospheres of the Terrestrial Planets

Worlds of Gas and Liquidthe Giant Planets

Gravity Is More Than Keplers Laws

Dwarf Planets and Small Solar System Bodies

Taking the Measure of Stars

A Run-Of-The-Mill G-Type Starour Sun

Star Formation and the Interstellar Medium

Stars in the Slow Lanelow-Mass Stellar Evolution

Live Fast,die Younghigh-Mass Stellar Evolution

Our Expanding Universe

Galaxies

The Milky Waya Normal Spiral Galaxy

Modern Cosmology

The Origin of Structure

Life

Filters

Exam 11: Planetary Adornmentsmoons and Rings

Which of the following is NOT geologically active?

Why do we suspect that the inner planets do not have rings?

Explain how Uranus's rings were first discovered.

Why do astronomers believe that Saturn has such prominent rings,and does the observed total mass in the ring system support this theory?

Which of the following is NOT a characteristic of regular moons?

Rings that project to look like they are intertwined (but are not)are caused by

Two years after first being observed,astronomers reported that Saturn's rings vanished.What happened to them?

Which property of a moon might lead you to believe it was a captured asteroid?

Why Learn Astronomy

Patterns in the Skymotions of Earth

Gravity and Orbitsa Celestial Ballet

Light

The Tools of the Astronomer

The Birth and Evolution of Planetary Systems

The Terrestrial Planets and Earths Moon

Atmospheres of the Terrestrial Planets

Worlds of Gas and Liquidthe Giant Planets

Gravity Is More Than Keplers Laws

Dwarf Planets and Small Solar System Bodies

Taking the Measure of Stars

A Run-Of-The-Mill G-Type Starour Sun

Star Formation and the Interstellar Medium

Stars in the Slow Lanelow-Mass Stellar Evolution

Live Fast,die Younghigh-Mass Stellar Evolution

Our Expanding Universe

Galaxies

The Milky Waya Normal Spiral Galaxy

Modern Cosmology

The Origin of Structure

Life

Filters