Vocab Crossword Puzzle

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