Across
- 2. Speed of sound in air is approximately 343 ____ per second (6 letters)
- 6. Material that reduces the amplitude of sound waves (8 letters)
- 7. Change in frequency of a sound wave relative to a moving source (8 letters)
- 9. Type of sound wave (12 letters)
- 10. Unit of sound intensity (7 letters)
Down
- 1. Repeated sound caused by reflection (4 letters)
- 3. Vibrational movement through air, water, or solids (5 letters)
- 4. Instrument for amplifying sound (9 letters)
- 5. Sound waves with frequencies above the human hearing range (10 letters)
- 8. Range of sound frequencies a human can hear (7 letters)