Astronomy Unit Four Quiz 30-32

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Astronomy Unit Four Quiz 30-32
2014-12-03 19:50:16
Astronomy 1020

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  1. The largest moons have planet or dwarf characteristics, while the small moons have _______ characteristics.
  2. What is the best evidence that Neptune's moon, Triton, is a captured planetary embryo?
    Triton's orbit is a retrogade orbit
  3. Earth's moon is the ________ largest moon in the solar system.
  4. The correct orbit-size sequence for the galilean moons of Juptier, from smallest to largest is ________.
    Io, Europa, Ganymede, Callisto
  5. For moons formed beyond the "snow-line" with densities less than 3g/cc, the density of the moon can tell us________.
    The ratio of ices and rock within the material of the moon
  6. With a few exceptions, all of the rings in the ring systems of the Jovian planets reside__________.
    inside the roche limit
  7. Why are there gaps in saturn's rings?
    Ring material orbit period resonances with some of saturn's moons.
  8. The rings of saturn are , on average, about _______ kilometer(s) thick.
  9. What is the approximate value of the classical roche limit?
    2.44 planet planet radii from the center of the planet
  10. On the arrangement of moons and rings, __________.
    Small moons can intermingle with rings and actually increase the stability of rings
  11. The coma of a comet is created through the process of _________.
  12. After passing through perihelion,  a comet's tail will_______.
    Move ahead of the nucleus and coma and precede the comet as it leaves the inner solar system
  13. Although this parameter's value varies from one comet apparition to the next, comets all have large _________.
  14. Since comets lose mass with each apparition, ________.
    Comets live for finite time periods
  15. The solar wind_________.
    Is made of small particles