Astronomy Quiz 14

18 Questions | Total Attempts: 71

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Astronomy Quiz 14

This quiz is testing basic knowledge on the planets Uranus and Neptune.


Questions and Answers
  • 1. 
    Uranus is striking in its:
    • A. 

      Featureless, green-blue appearance in the visible

    • B. 

      Faintly banded, green-blue appearance in the visible

    • C. 

      Strongly banded, green-blue appearance in the visible

    • D. 

      All of the above

    • E. 

      None of the above

  • 2. 
    Neptune is striking in its:
    • A. 

      Featureless, blue appearance in the visible

    • B. 

      Faintly banded, blue appearance in the visible

    • C. 

      Strongly banded, blue appearance in the visible

    • D. 

      All of the above

    • E. 

      None of the above

  • 3. 
    Uranus is like Jupiter in having a long lived:
    • A. 

      Great green spot

    • B. 

      Great dark spot

    • C. 

      Great blue spot

    • D. 

      Great red spot

    • E. 

      None of the above

  • 4. 
    Neptune is like Jupiter in having a long lived:
    • A. 

      Great green spot

    • B. 

      Great dark spot

    • C. 

      Great blue spot

    • D. 

      Great red spot

    • E. 

      None of the above

  • 5. 
    Uranus has a similar average density to:
    • A. 

      Jupiter

    • B. 

      Saturn

    • C. 

      Neptune

    • D. 

      None of the above

  • 6. 
    Uranus is unique is having its rotation axis:
    • A. 

      Always pointing towards the Sun

    • B. 

      Nearly in the plane of its orbit (around the Sun)

    • C. 

      Always pointing away from the Sun

    • D. 

      Nearly perpendicular to the plane of its orbit (around the Sun)

    • E. 

      None of the above

  • 7. 
    Uranus has one feature in common with Venus:
    • A. 

      A dense atmosphere above a rocky landscape

    • B. 

      Retrograde rotation

    • C. 

      Strong magnetic field that is not aligned with its rotation axis

    • D. 

      All of the above

    • E. 

      None of the above

  • 8. 
    Neptune has one feature in common with Saturn:
    • A. 

      A system of distinctive rings

    • B. 

      Cloud tops at a temperature of about 100K

    • C. 

      An internal heat source so that the planet radiates about 3x the E it receives from the Sun

    • D. 

      All of the above

    • E. 

      None of the above

  • 9. 
    Uranus and Neptune have almost the same:
    • A. 

      Period of rotation

    • B. 

      Cloud top temperature

    • C. 

      Number of moons

    • D. 

      Both a) and b)

    • E. 

      Both a) and c)

  • 10. 
    Which planets have almost the same axial tilt (ie. roation axis offset from a line perpendicular to the plane of their orbits):
    • A. 

      Mercury and Jupiter

    • B. 

      Earth, Mars, Saturn, and Neptune

    • C. 

      Uranus and Venus

    • D. 

      Both a) and b)

    • E. 

      Both a) and c)

  • 11. 
    H and He add up to about _____ of Uranus and Neptune's masses:
    • A. 

      99%

    • B. 

      90%

    • C. 

      70%

    • D. 

      50%

    • E. 

      30%

  • 12. 
    Uranus' featureless atmosphere may be a consequence of:
    • A. 

      The orientation of its rotation axis

    • B. 

      The orientation and offset of its magnetic field axis

    • C. 

      Its lack of an internal E source

    • D. 

      All of the above

    • E. 

      None of the above

  • 13. 
    Uranus is notable in having a differential rotation where:
    • A. 

      The entire surface rotates with essentially the same period

    • B. 

      The equator rotates much faster (by more than 2 hours less) than at the poles

    • C. 

      The equator rotates much slower (by more than 2 hours more) than at the poles

    • D. 

      The equator rotates somewhat faster (by more than 1/2 hour less) than at the poles

    • E. 

      The equator rotates somewhat slower (by more than 1/2 hour more) than at the poles

  • 14. 
    The bluish coloration of both Uranus and Neptune comes from:
    • A. 

      Water layers in the upper atmosphere

    • B. 

      Fine iron(rust) particles in the upper atmosphere

    • C. 

      Relatively high percentage of methane in the atmosphere

    • D. 

      Abnormally high level of He in the upper atmosphere

    • E. 

      None of the above

  • 15. 
    Internal heating on Uranus is thought to come from:
    • A. 

      Radioactive decays of heavy elements

    • B. 

      Slow, continuing gravitational contraction of the planet

    • C. 

      He rain

    • D. 

      Residual heat from the planet's formation slow leaking to the surface

    • E. 

      None of the above

  • 16. 
    Internal heating on Neptune is thought to come from:
    • A. 

      Radioactive decays of heavy elements

    • B. 

      Slow, continuing gravitational contraction of the planet

    • C. 

      He rain

    • D. 

      Residual heat from the planet's formation slow leaking to the surface

    • E. 

      None of the above

  • 17. 
    Triton has a distinctive surface:
    • A. 

      With little cratering, suggestive of resurfacing

    • B. 

      That is highly reflective, possibly (water) ice surface

    • C. 

      With a clearly defined "polar cap"

    • D. 

      All of the above

    • E. 

      None of the above

  • 18. 
    Of all of the "large" moons in the solar system, Triton is unique in:
    • A. 

      Having little cratering, suggestive of resurfacing

    • B. 

      A highly reflective, possibly (water) ice surface

    • C. 

      Revolving around "its planet" in a "backward" direction

    • D. 

      All of the above

    • E. 

      None of the above