Y8 P2 Sound revision

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Across
  1. 5. Move backwards and forwards.
  2. 7. A reflection of sound.
  3. 8. Sound can be heard through a _____________ , liquid or gas.
  4. 11. The number of vibrations every second.
  5. 13. This part of the ear changes sound energy into electrical energy.
  6. 14. A low pitch note has a _____________ frequency.
  7. 15. Sound can’t travel through this.
Down
  1. 1. The _____________ nerve carries impulses to the brain.
  2. 2. The ears do this.
  3. 3. This causes an echo.
  4. 4. This travels slower than lightning during a storm.
  5. 6. Materials which stop sound reflections do this.
  6. 9. Unit for loudness.
  7. 10. Unit for frequency.
  8. 12. The tube that sound waves travel along to get to the eardrum