Science study guide (1)

12345678910111213141516171819202122
Across
  1. 4. Seventh planet from the sun
  2. 8. closest planet to the sun
  3. 9. Farthest planet from the sun
  4. 10. space rock that orbits the sun
  5. 12. believed in sun centered solar system
  6. 14. what causes seasons
  7. 18. What our planets our in
  8. 20. only planet that we know that has life
  9. 21. caused by the gravitational pull of the moon and sun
  10. 22. hottest planet in our solar system
Down
  1. 1. Fourth planet from the sun
  2. 2. Fifth planet from the sun
  3. 3. when the earth goes around the sun
  4. 5. a planet that is made of gas
  5. 6. large bodies of water on earth
  6. 7. rocky planets
  7. 8. what makes gravity stronger/weaker
  8. 11. challenged the idea of earth center solar system
  9. 12. keeps the planets in motion around the sun
  10. 13. a dwarf planet
  11. 15. has a tail that points away from the sun
  12. 16. what causes day and night
  13. 17. Sixth planet from the sun
  14. 18. a giant star that provide earth with energy
  15. 19. sometimes called a shooting star