Across
- 4. Matter that takes the shape of its container
- 5. A galaxy shaped like a swirl
- 8. Imaginary line Earth spins around
- 11. Liquid changing into gas
- 12. Matter that spreads out to fill space
- 13. The amount of space something takes up
- 14. The amount of matter in an object
- 15. Tiny particles that make up matter
- 18. belt Region of rocks between Mars and Jupiter
- 19. point The temperature when a liquid turns to gas
- 20. A force that slows motion when surfaces rub
- 21. The planet we live on
Down
- 1. Matter with a definite shape
- 2. A round or oval shaped galaxy
- 3. point The temperature when a liquid turns to solid
- 6. eclipse When Earth blocks sunlight from the Moon
- 7. eclipse When the Moon blocks the Sun
- 9. Changes in weather during the year
- 10. Gas changing into liquid
- 14. point The temperature when a solid turns to liquid
- 16. The force that pulls objects toward Earth
- 17. A galaxy with no regular shape