Chapter 18

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Chapter 18
2012-04-19 22:11:07
ASTR 205

Jovian Planets- Key terms and concepts
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  1. oblateness
    the flattening of a spherical body usually cause by rotation
  2. liquid metallic hydrogen
    a form of liquid hydrogen that is a good electrical conductor found in the interiors of jupiter and saturn
  3. magnetosphere
    the volume of space around a planet within which the motion of charged particles is dominated by the planetary magnetic field rather than the solar wind
  4. belt-zone circulation
    the atmospheric circulation typical of Jovian planets. Dark belts and bright zones encirle the planet parallel to its equator
  5. Galilean moons
    the four largest moons of Jupiter
  6. grooved terrain
    regions of the surface of Ganymede consisting of parallel grooves. Scientists believe such terrain was formed by repeated fracturing of the icy crust
  7. tidal heating
    the heating of a planet or satellite because of friction caused by tides
  8. orbital resonances
    objects in gravitational tidal lock or synchronized orbits
  9. forward scattering
    the optical property of finely divided particles to preferentially direct light in the original direction of the light's travel
  10. Roche limit
    the minimum distance between a planet and a satellite that holds itself together by its own gravity.
  11. shepard satellite
    a satellite that, by its gravitational field, confines particles to a planetary ring

  12. ovoid
    the oval features found on Miranda, a moon of Uranus
  13. Occulation
    the passage of a larger appearing body in front of a smaller appearing body