Across
- 1. has a nucleus, coma, and tail
- 3. if gravity disappears Earth moves in a line
- 7. Mercury Venus Earth Mars
- 9. the Earth is tilted on its
- 11. shape of our galaxy
- 12. another name for the outer planets
- 13. Jupiter Saturn Uranus Neptune
Down
- 2. shape of the planet's orbits
- 4. takes one day
- 5. takes one year
- 6. hottest planet
- 8. more _____ = greater gravitational pull
- 10. shorter ____ = greater gravitational pull