PHY122 Vocab Part 3

PHY122 Vocab Part 3 - Chapter 18 Oblateness: the flattening...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 18 Oblateness: the flattening of a spherical body, usually caused by rotation Liquid metallic hydrogen: a form of liquid hydrogen that is a good electrical conductor, found in the interiors of Jupiter and Saturn 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 Belt-zone circulation: the atmospheric circulation typical of Jovian planets in which dark belts and bright zones encircle the planet parallel to its equator Galilean moons: the four largest satellites of Jupiter, named after their discoverer, Galileo Groove terrain: regions of the surface of Ganymede consisting of parallel grooves, believed to have been formed by repeated fracture of the icy crust Tidal heating: the heating of a planet of satellite because of friction caused by tides Orbital resonances: orbital periods of objects related by simple arithmetic relationships. For example, Io’s orbital period around Jupiter is exactly ½ of Europa’s, and exactly ¼ of Ganymede’s; as a result, the objects strongly influence each other gravitationally. Forward scattering: the optical property of finely divided particles to preferentially direct light in the original direction of the light’s travel. Roche limit: the minimum distance between a planet and a satellite that holds itself together by its own gravity. If a satellites orbit brings it within its planet’s Roche limit, tidal forces will pull the satellite apart. Shepherd satellites: a satellite that, by its gravitational field, confides particles to a planetary ring Ovoids: the oval features found on Miranda, a satellite of Uranus Occultations: the passage of a larger body in front of a smaller body
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/11/2011 for the course PHY 121 taught by Professor Weinstein during the Fall '08 term at SUNY Buffalo.

Page1 / 3

PHY122 Vocab Part 3 - Chapter 18 Oblateness: the flattening...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online