Solar System Review

123456789101112131415
Across
  1. 4. only planet with life
  2. 7. name of our galaxy
  3. 9. force of attraction between objects
  4. 10. found between Mars and Jupiter
  5. 11. planets Jupiter, Saturn, Uranus, and Neptune
  6. 13. changes when you go to another planet
  7. 15. center of our solar system
Down
  1. 1. space rock that has hit a surface
  2. 2. largest planet
  3. 3. direction a comet's tail faces
  4. 5. shape of planet orbit
  5. 6. amount of matter in an object
  6. 7. Earth's natural satellite
  7. 8. planet with the shortest year
  8. 9. outer planet composition
  9. 12. inner planet composition
  10. 14. planets Mercury, Venus, Earth, and Mars