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The solar system
| Question | Answer |
|---|---|
| Astronomical unit | Used to measure far distance in space 1 AU=Distance from Earth to sun |
| Meteoroid | Chunk of rock smaller than asteroid |
| Meteor | Streak of light |
| Meteorite | Space rock found on Earth |
| Asteroid | Millions of small rocky object that orbit the sun in the asteroid belts between mars and Jupiter |
| Comets | Made of gas dust and ice, revolve around the sun in the Kuiper Belt and Oort Cloud |
| Inner plants | Trerrestrial planets Solid and rocky Mercury Venus Earth Mars |
| Outer plants | Gas giant Made of ice and gas Jupiter Saturn Uranus Neptune |
| Jupiter | Largest planet Galilean moons Great Red Spot |
| Saturn | Most complex ring system Least dense plant- it would float Titan largest moon |
| Uranus | Rotation axis is tilted 90 degrees so rotates like a bowling ball |
| Neptune | Longest period of revolution Swirling storms |
| Gas giants | 4 outer planets nickname |
| Galilean moons | Io Europe Ganymede Callisto 4 moons Galilean discovered around Jupiter |
| Dwarf planet | Pluto was the first Same as planets but not larger than its neighbors Ceres in the asteroid belt |