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Ch 11 Jupiter Part 2
Vocabulary
| Term | Definition |
|---|---|
| Gravitational Compression | when the mass of an object reduces its size and increases its density |
| Molecular Hydrogen | gaseous molecule formed by two hydrogen atoms that share their electrons |
| Metallic Hydrogen | phase of hydrogen where it behaves like an electrical conductor at high pressure |
| Dwarf Star | has a radius equal to or smaller than our Sun |
| Magnetosphere | zone of charged particles above the atmosphere trapped by a planet's magnetic field |
| Aurorae | when atmospheric molecules are excited by incoming charged particles from the solar wind |
| Galilean Moons | Jupiter's four largest satellites first observed by Galileo |
| Terrestrial | inner Earth-like planets |
| Eccentricity | a measure of the flatness of an ellipse |
| Asteroid | one of thousands of smaller rocky bodies usually orbiting the Sun between Mars and Jupiter |
| Io | closest orbiting Galilean moon of Jupiter |
| Europa | second closest orbiting Galilean moon of Jupiter |
| Ganymede | second farthest orbiting Galilean moon of Jupiter |
| Callisto | farthest orbiting Galilean moon of Jupiter |
| Van Allen Belts | regions of magnetically trapped, charged particles (radiation) perpendicular to a planet's poles |