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Investigating which material blocks the sound best

Investigating which material blocks the sound best . By Rachael Davide and Amy . Method . Equipment needed sound meter alarm air, bubble wrap foam, cotton wool, foam rubber . Equipment . Foam rubber. Cotton wool . Foam . Bubble wrap . Alarm . Sound meter . Method .

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Investigating which material blocks the sound best

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  1. Investigating which material blocks the sound best By Rachael Davide and Amy

  2. Method Equipment needed • sound meter • alarm • air, bubble wrap • foam, cotton wool, foam rubber

  3. Equipment Foam rubber Cotton wool Foam Bubble wrap Alarm Sound meter

  4. Method • Make a sound wave using the alarm clock • Use a sound meter( at the other end of the room)to measure the sound in dB one at a time. • Put the material over the sound meter and measure the sound. • Record the results in a table.

  5. Results

  6. Results dB Material

  7. Conclusion The cotton wool is the best at blocking out the sound.

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