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Astronomy Quiz 11

19 Questions
Astronomy Quizzes & Trivia

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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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)

  • 18. 
    Callisto's largest basin is named:
    • A. 

      Caloris basin

    • B. 

      Orientale basin

    • C. 

      Argyre Planitia

    • D. 

      Valhalla basin

    • E. 

      None of the above

  • 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