Sound - Year 9 Science

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Across
  1. 2. Spiral shaped tube filled with fluid
  2. 5. Permanent ringning in the ears
  3. 6. High frequency sounds have shorter or longer wavelengths?
  4. 7. Regions of space in which air particles are bunched together
  5. 12. Movement of alternating compressions and rarefactions
  6. 14. Another name for a Compression sound wave
  7. 15. What type of wave moves in a vertical direction?
  8. 17. Sound waves with a frequency lover than our hearing range
  9. 19. Measure of frequency
  10. 21. What sort of materials absorb sound?
  11. 22. What is reflected sound heard as?
  12. 24. When this happens sound is produced
  13. 25. Do sound waves travel away or towards the source of the sound?
Down
  1. 1. Does sound travel faster in Warmer air or in Cooler air?
  2. 3. When sound is absorbed it is turned into what?
  3. 4. Sound waves with frequencies above our hearing range
  4. 8. Regions of space where air particles are more spread out
  5. 9. Measure time difference between sending and receiving sound waves
  6. 10. The hammer, anvil and stirrup bones
  7. 11. Distance between successive peaks
  8. 13. Loudness is measured in these
  9. 16. Loudness above this number of decibels can permanently damage hearing
  10. 18. The number of vibrations a sound makes per second
  11. 20. Does sound travel faster or slower through solids than through liquids?
  12. 23. A source that vibrates rapidly produces sound of what sort of pitch?