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ES ASTRO 3
Review for Glencoe ASTRO Ch 3
| Term | Definition |
|---|---|
| heliocentric | The solar system model that places planets in orbit around the sun |
| geocentric | The solar system model that places the sun and all other planets in orbit around earth |
| Phobos | A moon of Mars |
| Deimos | A moon of Mars |
| Jovian | Refers to the outer gas giants; Jupiter, Saturn, Uranus, and Neptune. Jove is an old term for the Roman God Jupiter. |
| Io | Galilean Moon of Jupiter. Heavily cratered by volcanoes. Sulfur planet. Tidal heating is important to Io. |
| Europa | Galilean Moon of Jupiter. Iron core with rocky surface, covered in water ice. May have huge stores of fresh water under the crust. |
| Ganymede | Galilean Moon of Jupiter. Rocky surface, covered in water ice. Largest moon in solar system. Oxygen atmosphere. |
| Callisto | Galilean Moon of Jupiter. Heavily cratered surface implies no tectonic or volcanic activity. Possible salty ocean. CO2 atmosphere. |
| Titan | Moon of Saturn. Second largest moon in solar system. Nitrogen and Methane atmosphere. |
| Comet | Dust and rock particles mixed with frozen water, methane, and ammonia. A "dirty snowball". |
| Meteoroid | A piece of rock debris floating through space |
| Meteor | A meteoroid that has entered earth's atmosphere and burns |
| Meteorite | A meteor that has hit earth's surface. |
| Asteroid | A large piece of rock debris floating through space |