Across
- 2. Another name for the inner planets
- 3. Another name for outer planets
- 7. This planets period of rotation is longer than its period of revolution
- 9. Mixture of rock, ice, and dust, and orbit the sun in long elliotical orbits
- 10. Small rocky partical that moves through space
- 13. A meteoride that strikes a planet or a moon
- 14. On this planet they have a variety of life because of the moderate temperature range
- 15. A meteoroid that has entered earths atmosphere producing a streak of light
Down
- 1. Was once classified as a planet but now considered a dwarf planet
- 4. Chunks of rock and ice that never clumped together like the rocks and ice that formed inner planets
- 5. round depression formed on the surface of a planet
- 6. THe time it takes an object to complete one rotation
- 8. This planet is the least dense planet
- 11. The largest planet in the atmosphere
- 12. Smallest planet and planet closest to the sun