Across
- 2. unit of frequency
- 5. unit for measuring volume
- 7. back and forth motion of matter
- 8. anything that takes up space
- 9. when sound waves bounce off a surface and come back to the listener
- 10. vibrations that move through matter
- 11. smallest particle of a substance
- 12. pitch
Down
- 1. the science that deals with matter and energy; light, heat, sound, electricity , motion and force
- 3. changes energy into electricity
- 4. volume or how loud
- 6. electrical instrument used to measure sounds
- 8. matter which sound waves can travel through (air, solids, water)