Waves

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Across
  1. 4. is a system that uses sound waves to determine the location of objects or to communicate
  2. 5. a disturbance that transfers energy from one place to another
  3. 6. is the distance from any point on a wave to an identical point on the next wave
  4. 9. is a measure of how far the particles in the medium move away from their normal rest position
  5. 13. the most common unit used to express loudness
  6. 14. is a reflected sound wave
  7. 17. isthe use of echoes,or reflected waves to find objects
  8. 18. happens when two or more waves overlap and combine to form one wave
  9. 19. In this wave particles move perpendicularly to the direction the wave travels
  10. 20. the measurement for frequency
Down
  1. 1. The particles of a medium vibrate in the same direction that the waves travels
  2. 2. The speed at which a wave travels
  3. 3. Is the time required for one cycle
  4. 7. Is a change in the observed frequency of a wave when the sound source,observer, or both are moving
  5. 8. how high or low you think a sound is
  6. 10. when a sound wave matches the natural frequency of an object and causes the object to vibrate
  7. 11. the material through witch a wave travels
  8. 12. is a measure of how well a sound can be heard
  9. 15. Is a longitudinal wave that is cased by vibrations and travels through a medium
  10. 16. are sound waves that have frequencies greater than 20,000 Hz