Question 1

What is the atmospheric pressure at the surface of Titan, Saturn's largest satellite? (one atmosphere = air pressure at sea level on Earth)

Accepted Answer

A) 82 atmospheres, almost as much as on Venus 
B) 1.5 atmospheres, just a bit more than on Earth 
C) 2.4 × 10-5 atmospheres, about half again that on Triton, Neptune's large moon 
D) 0.023 atmospheres, about one-third of that on Mars 
A) 82 atmospheres, almost as much as on Venus 
B) 1.5 atmospheres, just a bit more than on Earth 
C) 2.4 × 10-5 atmospheres, about half again that on Triton, Neptune's large moon 
D) 0.023 atmospheres, about one-third of that on Mars

Question 2

If the orbital period of Io, the innermost Galilean satellite of Jupiter, is 1.77 days, what is the rotation period around its own axis?

Accepted Answer

A) 3.54 days-twice the orbital period 
B) 1.77 days - same as orbital period 
C) 1.18 days-two-thirds of the orbital period 
D) 5.31 days-3 times the orbital period 
A) 3.54 days-twice the orbital period 
B) 1.77 days - same as orbital period 
C) 1.18 days-two-thirds of the orbital period 
D) 5.31 days-3 times the orbital period

Question 3

The surface of Callisto, the outer Galilean satellite of Jupiter, can best be described as:

Accepted Answer

A) relatively smooth, with a great many impact craters and one large basin created by an asteroid impact. 
B) very smooth, with a network of streaks and cracks and very few craters. 
C) rough and mountainous, with evidence of volcanic or geyser-like activity. 
D) relatively smooth, with many small craters but no evidence of large impacts. 
A) relatively smooth, with a great many impact craters and one large basin created by an asteroid impact. 
B) very smooth, with a network of streaks and cracks and very few craters. 
C) rough and mountainous, with evidence of volcanic or geyser-like activity. 
D) relatively smooth, with many small craters but no evidence of large impacts.

Question 4

Most of the satellites of Jupiter beyond the innermost eight appear to be:

Accepted Answer

A) loose collections of small rocks, held together by self-gravity. 
B) rocky or icy debris left over from the formation of the jovian satellite system. 
C) asteroids captured by Jupiter. 
D) about the same size as our Moon or Mercury. 
A) loose collections of small rocks, held together by self-gravity. 
B) rocky or icy debris left over from the formation of the jovian satellite system. 
C) asteroids captured by Jupiter. 
D) about the same size as our Moon or Mercury.

Question 5

How is the Io plasma torus formed?

Accepted Answer

A) Io's motion through Jupiter's magnetosphere creates currents of electrons and charged particles in a loop between Io and Jupiter's north and south magnetic poles. 
B) Io disturbs Jupiter's magnetosphere, causing magnetospheric-charged particles to collect in a ring around Io's orbit. 
C) Charged particles from Jupiter's magnetosphere ionize and eject atoms from Io's surface and from its volcanic plumes. 
D) Io's volcanic plumes propel neutral atoms into orbit around Jupiter, where they are then ionized by high-energy charged particles in Jupiter's magnetosphere. 
A) Io's motion through Jupiter's magnetosphere creates currents of electrons and charged particles in a loop between Io and Jupiter's north and south magnetic poles. 
B) Io disturbs Jupiter's magnetosphere, causing magnetospheric-charged particles to collect in a ring around Io's orbit. 
C) Charged particles from Jupiter's magnetosphere ionize and eject atoms from Io's surface and from its volcanic plumes. 
D) Io's volcanic plumes propel neutral atoms into orbit around Jupiter, where they are then ionized by high-energy charged particles in Jupiter's magnetosphere.

Question 6

Which of the following properly lists the planets and satellites of planets in order of decreasing density?

Accepted Answer

A) Mercury, Io, the Moon, and Europa 
B) Mercury, the Moon, Io, and Europa 
C) the Moon, Mercury, Io, and Europa 
D) Europa, Mercury, the Moon, and Io 
A) Mercury, Io, the Moon, and Europa 
B) Mercury, the Moon, Io, and Europa 
C) the Moon, Mercury, Io, and Europa 
D) Europa, Mercury, the Moon, and Io

Question 7

The structure of Callisto, the outer Galilean satellite of Jupiter, is thought to be:

Accepted Answer

A) a thick ice crust and a slushy mantle of ice and water over a core of rock. 
B) mostly or entirely rock with no firm evidence of an iron core, and active volcanoes on its surface. 
C) a large rocky core with a thin layer (100 km thick) of ice and water over it. 
D) a jumbled mixture of about half rock and half ice. 
A) a thick ice crust and a slushy mantle of ice and water over a core of rock. 
B) mostly or entirely rock with no firm evidence of an iron core, and active volcanoes on its surface. 
C) a large rocky core with a thin layer (100 km thick) of ice and water over it. 
D) a jumbled mixture of about half rock and half ice.

Question 8

The main source of the charged particles in Jupiter's magnetosphere is:

Accepted Answer

A) the solar wind. 
B) cosmic rays from beyond the solar system. 
C) the atmosphere of Jupiter itself. 
D) Io. 
A) the solar wind. 
B) cosmic rays from beyond the solar system. 
C) the atmosphere of Jupiter itself. 
D) Io.

Question 9

How deep is the subsurface ocean on Europa thought to be?

Accepted Answer

A) a few kilometers 
B) 50 km 
C) 100 km 
D) over 500 km 
A) a few kilometers 
B) 50 km 
C) 100 km 
D) over 500 km

Question 10

Which spacecraft reached Jupiter most recently?

Accepted Answer

A) Ulysses 
B) Juno 
C) New Horizons 
D) Galileo 
A) Ulysses 
B) Juno 
C) New Horizons 
D) Galileo

What is the atmospheric pressure at the surface of Titan, Saturn's largest satellite? (one atmosphere = air pressure at sea level on Earth)

If the orbital period of Io, the innermost Galilean satellite of Jupiter, is 1.77 days, what is the rotation period around its own axis?

The surface of Callisto, the outer Galilean satellite of Jupiter, can best be described as:

Most of the satellites of Jupiter beyond the innermost eight appear to be:

How is the Io plasma torus formed?

Which of the following properly lists the planets and satellites of planets in order of decreasing density?

The structure of Callisto, the outer Galilean satellite of Jupiter, is thought to be:

The main source of the charged particles in Jupiter's magnetosphere is:

How deep is the subsurface ocean on Europa thought to be?

Which spacecraft reached Jupiter most recently?

Astronomy and the Universe

Knowing the Heavens

Eclipses and the Motion of the Moon

Gravitation and the Waltz of the Planets

The Nature of Light

Optics and Telescopes

Comparative Planetology I: Our Solar System

Comparative Planetology II: the Origin of Our Solar System

The Living Earth

Our Barren Moon

Mercury, Venus, and Mars: Terrestrial, yet Unique

Jupiter and Saturn: Lords of the Planets

Uranus, Neptune, Pluto, and the Kuiper Belt: Remote Worlds

Asteroids, Comets, and Impacts

Our Star, the Sun

The Nature of the Stars

The Birth of Stars

Stellar Evolution: on and After the Main Sequence

Stellar Evolution: The Death of Stars

Stellar Remnants: Neutron Stars and Black Holes

Our Galaxy

Galaxies

Quasars and Active Galaxies

Cosmology: The Origin and Evolution of the Universe

Exploring the Early Universe

The Search for Extraterrestrial Life

Filters

Exam 13: Jupiter and Saturns Satellites of Fire and Ice

What is the atmospheric pressure at the surface of Titan, Saturn's largest satellite? (one atmosphere = air pressure at sea level on Earth)

If the orbital period of Io, the innermost Galilean satellite of Jupiter, is 1.77 days, what is the rotation period around its own axis?

The surface of Callisto, the outer Galilean satellite of Jupiter, can best be described as:

Most of the satellites of Jupiter beyond the innermost eight appear to be:

How is the Io plasma torus formed?

Which of the following properly lists the planets and satellites of planets in order of decreasing density?

The structure of Callisto, the outer Galilean satellite of Jupiter, is thought to be:

The main source of the charged particles in Jupiter's magnetosphere is:

How deep is the subsurface ocean on Europa thought to be?

Which spacecraft reached Jupiter most recently?

Astronomy and the Universe

Knowing the Heavens

Eclipses and the Motion of the Moon

Gravitation and the Waltz of the Planets

The Nature of Light

Optics and Telescopes

Comparative Planetology I: Our Solar System

Comparative Planetology II: the Origin of Our Solar System

The Living Earth

Our Barren Moon

Mercury, Venus, and Mars: Terrestrial, yet Unique

Jupiter and Saturn: Lords of the Planets

Uranus, Neptune, Pluto, and the Kuiper Belt: Remote Worlds

Asteroids, Comets, and Impacts

Our Star, the Sun

The Nature of the Stars

The Birth of Stars

Stellar Evolution: on and After the Main Sequence

Stellar Evolution: The Death of Stars

Stellar Remnants: Neutron Stars and Black Holes

Our Galaxy

Galaxies

Quasars and Active Galaxies

Cosmology: The Origin and Evolution of the Universe

Exploring the Early Universe

The Search for Extraterrestrial Life

Filters