Astronomy Quiz 11

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This quiz is designed to test knowledge on the basics of the planet Jupiter and its moons.

Questions and Answers

1.

The Galilean moons are (in increasing distance from Jupiter):
- A.
  
  Titan, Triton, Europa, Ganymede
- B.
  
  Io, Triton, Callisto, Europa
- C.
  
  Titan, Callisto, Ganymede, Io
- D.
  
  Io, Europa, Ganymede, Callisto
- E.
  
  None of the above
Correct Answer
D. Io, Europa, Ganymede, Callisto
2.

Jupiter's Galilean moons are called a "minature solar system" because:
- A.
  
  Their orbits are nearly circular and lie in a plane
- B.
  
  Their revolution direction (about Jupiter) are all the same
- C.
  
  The average densities decrease with increasing distance from Jupiter
- D.
  
  All of the above
- E.
  
  None of the above
Correct Answer
D. All of the above
3.

Following the variations from Terrestrial to Jovian planets:
- A.
  
  Io and Europa are believed to have rocky mantles and iron cores
- B.
  
  Callisto is thought to have a large, outer icy mantle with a smaller inner rocky mantle and an iron core
- C.
  
  Ganymede is thought to be mainly rock/ice mixture with little or no core
- D.
  
  All of the above
- E.
  
  None of the above
Correct Answer
A. Io and Europa are believed to have rocky mantles and iron cores
4.

Although Io has no ocean on its surface, tidal forces from Jupiter cause a:
- A.
  
  1 m high tidal buldge
- B.
  
  10 m high tidal buldge
- C.
  
  100 m high tidal buldge
- D.
  
  1000 m high tidal buldge
- E.
  
  None of the above
Correct Answer
C. 100 m high tidal buldge
5.

If Io is "tidally locked" to Jupiter, how can gravitational energy be "pumped" into its surface?
- A.
  
  Indeed; thus it must be natural radioactivity in Io's Core that "powers" the volcanic activity
- B.
  
  Indeed; and it is the additional tidal interaction with Europa that "powers" Io's volcanic activity
- C.
  
  Indeed; but Io's non-circular orbit means Io's tidal buldge "wobbles" back and forth as Io fails to point perfectly toward Jupiter at all points in its orbit
- D.
  
  None of the above
Correct Answer
C. Indeed; but Io's non-circular orbit means Io's tidal buldge "wobbles" back and forth as Io fails to point perfectly toward Jupiter at all points in its orbit
6.

Evidence for "ongoing" volcanic activity on Io are:
- A.
  
  Photos from Voyager I showing erupting volcanoes
- B.
  
  Io's lack of craters is consistent with almost constant "resurfacing" by molten flows
- C.
  
  Io's thin atmosphere of sulfur dioxide is consistent with recent volcanic emissions
- D.
  
  All of the above
- E.
  
  None of the above
Correct Answer
D. All of the above
7.

Io's largest volcano, Smoki, is:
- A.
  
  Larger than the state of Maryland
- B.
  
  Emits more energy than all of Earth's volcanoes combined
- C.
  
  Occasionally has lava temperatures far in excess of any of Earth's volcanoes
- D.
  
  All of the above
- E.
  
  None of the above
Correct Answer
E. None of the above

Explanation
Correct name is Loki, then d) is true.

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8.

Europa is like Io in:
- A.
  
  Showing clear "ongoing" volcanic activity
- B.
  
  Showing almost no cratering consistent with recent "resurfacing"
- C.
  
  Having a vast network of lines crisscrossing bright, fields of water ice
- D.
  
  All of the above
- E.
  
  None of the above
Correct Answer
B. Showing almost no cratering consistent with recent "resurfacing"
9.

Voyager satellite images suggest that Europa has an ocean of:
- A.
  
  Magma(molten rock)
- B.
  
  Water
- C.
  
  Liquid carbon dioxide
- D.
  
  Liquid hydrocarbons (eg. methane)
- E.
  
  None of the above
Correct Answer
B. Water
10.

Above Europa's ocean is a relatively thin layer of:
- A.
  
  (conventional) rock
- B.
  
  Ice
- C.
  
  Dry ice
- D.
  
  Linoleum
- E.
  
  None of the above
Correct Answer
B. Ice
11.

It is theorized that Europa's ocean remains liquid because of:
- A.
  
  Remnant heat from the formation of the moon
- B.
  
  Gravitational and magnetic forces from Jupiter
- C.
  
  Meteorite impacts intensified by the proximity of Jupiter
- D.
  
  All of the above
- E.
  
  None of the above
Correct Answer
B. Gravitational and magnetic forces from Jupiter
12.

Ganymede, the largest of Jupiter's moons, is also:
- A.
  
  Bigger than either of Mars' moons
- B.
  
  Bigger than Earth's moon
- C.
  
  Bigger than Mercury
- D.
  
  All of the above
- E.
  
  None of the above
Correct Answer
D. All of the above
13.

The surface of Ganymede resembles our moon's suface in:
- A.
  
  Always showing "one face" to Jupiter
- B.
  
  Having many impact craters
- C.
  
  Patterns of light and dark areas similar to maria and highlands on the moon
- D.
  
  All of the above
- E.
  
  None of the above
Correct Answer
D. All of the above
14.

Unlike our moon, on Ganymede:
- A.
  
  Light colored areas are younger and dark colored areas are older
- B.
  
  Light colored areas are older and dark colored areas are younger
- C.
  
  Light and dark areas are equally cratered
- D.
  
  None of the above
Correct Answer
A. Light colored areas are younger and dark colored areas are older
15.

Unlike our moon, "resurfacing" on Ganymede is thought to be outflows of:
- A.
  
  Magma(molten rock)
- B.
  
  Water
- C.
  
  Liquid carbon dioxide
- D.
  
  Liquid hydrocarbons (eg. liquid methane)
- E.
  
  None of the above
Correct Answer
B. Water
16.

Unlike our moon, Ganymede's surface includes:
- A.
  
  Active volcanoes
- B.
  
  Evidence for possible tectonic motion seen in grooves and ridges
- C.
  
  Vast areas with no craters
- D.
  
  All of the above
- E.
  
  None of the above
Correct Answer
B. Evidence for possible tectonic motion seen in grooves and ridges
17.

Callisto appears similar to Ganymede but with:
- A.
  
  More craters and fewer fault(grooves and ridges) lines
- B.
  
  Fewer craters and more fault(grooves and ridges) lines
- C.
  
  Several large "basins"
- D.
  
  Both a) and c)
- E.
  
  Both b) and c)
Correct Answer
B. Fewer craters and more fault(grooves and ridges) lines
18.

Callisto's largest basin is named:
- A.
  
  Caloris basin
- B.
  
  Orientale basin
- C.
  
  Argyre Planitia
- D.
  
  Valhalla basin
- E.
  
  None of the above
Correct Answer
D. Valhalla basin
19.

The "rocky" cratered surface of Callisto is believed to be mainly:
- A.
  
  (conventional) rock
- B.
  
  Ice
- C.
  
  Dry ice
- D.
  
  Linoleum
- E.
  
  None of the above
Correct Answer
B. Ice

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Current Version
Dec 13, 2012

Quiz Edited by
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Oct 24, 2008

Quiz Created by
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Astronomy Quiz 11

The Galilean moons are (in increasing distance from Jupiter):

Jupiter's Galilean moons are called a "minature solar system" because:

Following the variations from Terrestrial to Jovian planets:

Although Io has no ocean on its surface, tidal forces from Jupiter cause a:

If Io is "tidally locked" to Jupiter, how can gravitational energy be "pumped" into its surface?

Evidence for "ongoing" volcanic activity on Io are:

Io's largest volcano, Smoki, is:

Europa is like Io in:

Voyager satellite images suggest that Europa has an ocean of:

Above Europa's ocean is a relatively thin layer of:

It is theorized that Europa's ocean remains liquid because of:

Ganymede, the largest of Jupiter's moons, is also:

The surface of Ganymede resembles our moon's suface in:

Unlike our moon, on Ganymede:

Unlike our moon, "resurfacing" on Ganymede is thought to be outflows of:

Unlike our moon, Ganymede's surface includes:

Callisto appears similar to Ganymede but with:

Callisto's largest basin is named:

The "rocky" cratered surface of Callisto is believed to be mainly: