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Ch 7 Solar System
Ch 7 Solar System GLencoe TN Grade 6
Term | Definition |
---|---|
Great Red Spot | Giant, high-pressure storm in Jupiter's atmosphere |
Jupiter | largest planet, 5th planet from the sun, atmosphere made up mostly of hydrogen and helium |
Neptune | Usually the 8th planet from the Sun; large, gaseous, and bluish-green in color |
Pluto | dwarf planet, has solid icy rock surface and 3 moons : Charon, Hydra, and Nix |
Saturn | 2nd largest planet, 6th planet from the Sun; has complex ring system, and at least 31 moons, with atmosphere made of hydrogen and helium |
Uranus (YOOR uh nus) | Seventh planet from the Sun; large and gaseous, has distinct bluish-green color |
Earth | 3rd planet from the Sun, has liquid water and an atmosphere that protects life. |
Mars | 4th planet from the Sun; has polar ice caps and a reddish appearance caused by iron oxide in the soil |
Mercury | Planet closest to the Sun; does not have a true atmosphere; surface has many craters and high cliffs |
Venus | 2nd Planet from the Sun; similar to Earth in mass and size; has thick clouds; violent weather; similar to a run-on greenhouse effect; |
asteroid | a piece of rock made up of material similar to that which formed the planets |
comet | space object made of dust and rock particles mixed with frozen water, methane, and ammonia |
meteor | a meteoroid that burns up in Earth's atmosphere |
meteorite | a meteoroid that strikes Earth's surface |
Oort Cloud | Area located further than Pluto, containing billions of comets |
Kuiper Belt | Area that is home to Pluto, Dwarf Planets, and short lived planets. |
rotation | one turn on it's axis |
revolution | orbit around the sun |
atmosphere | layer of gases around a planet; these tend to trap heat |
Terrestrial Planets | Inner Planets, Mercury, Venus, Earth, Mars |
Jovian Planets | Outer, Gaseous Planets. Also known as gas giants. |
Frost Line | Invisible boundary which gases condense near planets. |