Gravity

1234567891011121314
Across
  1. 4. Filled with air
  2. 6. Isaac
  3. 7. Object that hit the ground first
  4. 9. Invisible ____
  5. 10. Gravity ______
  6. 11. Hit him on the head
  7. 13. Pulls everything ____.
  8. 14. You made this
Down
  1. 1. Sticks together
  2. 2. Not above
  3. 3. Where you found the pictures
  4. 5. Can't see
  5. 8. Lives in space
  6. 9. Lighter objects do this
  7. 12. No gravity = No_____