Across
- 1. How many cycles occur in a amount of time
- 6. A measure of how well a sound can be heard
- 8. The particles of a medium vibrate in the same direction that the waves travels the same direction
- 12. Frequency is expressed in this
- 13. The distance from any point on a wave to an identical point on the next wave
- 15. Waves that have frequencies greater than 20,000 Hz
- 16. A reflected sound wave
- 19. A system that uses sound waves to determine the location of objects
- 20. The speed at which a wave travels
- 22. The most common unit to used to express loudness
- 23. When two or more waves overlap and combine to form one wave
- 25. A measure of how far the particles in the medium move away from their normal rest position
Down
- 2. Use of echoes or reflected sound waves to find objects
- 3. A longitudinal wave that is caused by vibrations
- 4. When a sound wave matches the natural frequency of a object
- 5. A wave of energy that is sent through the air
- 7. How high or low you think a sound is
- 9. A wave of energy that is sent through wires
- 10. Involing sound waves with a frequency above the upper limit of human hearing
- 11. The material through which a wave travels
- 14. A change in the observed frequency of a wave
- 17. A device that does not need a cord
- 18. The time required for one cycle
- 21. A wave of energy
- 24. A disturbance that transfers energy