Across
- 7. a rock that orbits the sun
- 9. the dark part of the moon
- 10. fall: falling without anything
- 15. it rotates around the sun
- 16. of rocks that fall to the earth sometimes
- 17. energy:energy that is stored
- 20. object in space that studies the earth and space
- 21. what the planets do to the sun
- 22. how much you weigh
- 23. law of universal gravitation:all objects pull on each other
Down
- 1. energy: energy that is in motion
- 2. hole:nothing can escape not even light
- 3. of space all of everything
- 4. of the earth
- 5. motion:an object that falls side ways
- 6. effect: use energy from gravitation fields to slingshot an object
- 8. dwarf: a small star with lots of density
- 11. planets attraction because of their masses
- 12. comet:fast objects to train astronauts
- 13. gravity: you are weightless
- 14. nova:a ball of light that is a exploding of a big star
- 18. how much is in an object
- 19. laws:how the plants move