Sound (key terms)

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Across
  1. 2. A wave where particles vibrate at right angles to the direction of travel. (2 words)
  2. 4. The tube that carries sound waves towards the eardrum. (2 words)
  3. 5. Three tiny bones in the middle ear that amplify vibrations.
  4. 7. The stretched‑out part of a longitudinal wave.
  5. 9. The number of waves produced each second.
  6. 13. Methods used to reduce the transfer of sound.
  7. 15. How high or low a sound is.
  8. 16. The distance between two matching points on a wave.
  9. 17. A graph or line showing how a sound wave changes over time. (2 words)
  10. 19. The height of a wave showing how loud a sound is.
Down
  1. 1. A back‑and‑forth movement that creates a wave.
  2. 3. The substance (solid, liquid or gas) that a wave travels through.
  3. 6. A wave where particles vibrate parallel to the direction of travel. (2 words)
  4. 8. The nerve that carries electrical signals from the ear to the brain. (2 words)
  5. 10. The squashed‑together part of a longitudinal wave.
  6. 11. A spiral‑shaped part of the inner ear that turns vibrations into electrical signals.
  7. 12. The unit used to measure how loud a sound is.
  8. 13. How fast sound travels through a medium. (3 words)
  9. 14. A repeated movement that creates sound waves.
  10. 18. A thin membrane that vibrates when sound waves hit it.