Sound

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Across
  1. 1. An unpleasant or unwanted sound (6 letters)
  2. 5. The phenomenon when sound reflects off surfaces (4 letters)
  3. 6. The organ that receives sound waves (3 letters)
  4. 8. The measurement unit for sound intensity (5 letters)
Down
  1. 2. The rate at which sound travels (5 letters)
  2. 3. The quality that makes a sound seem high or low (4 letters)
  3. 4. A type of wave that transfers energy through a medium (4 letters)
  4. 7. The material through which sound can travel (3 letters)