Across
- 6. when matter changes into a new kind of matter
- 9. how loud or soft a sound is
- 10. anything that has mass and takes up space
- 11. a tiny particle that makes up matter
- 12. has a definite shape and volume
- 14. has no definite volume or shape
- 15. how high or low a sound is
- 17. a rapid back-and-forth movement
- 18. a form of energy that you can hear
- 19. anything about an object that can be observed with your senses
Down
- 1. when a gas changes to a liquid
- 2. a doctor who treats patients with hearing problems
- 3. to bounce off an object
- 4. the amount of space that an object takes up
- 5. a sound wave that reflects clearly enough to be heard again
- 7. to take in
- 8. when a liquid changes to a gas
- 10. the amount of matter in an object
- 13. has a definite volume, but not a definite shape
- 16. two or more kinds of matter that are combined