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

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Which material is best for muffling sound?

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Presentation transcript:

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 Alarm Bubble wrap Foam Foam rubber Cotton wool Sound meter

Method 1.Make a sound wave using the alarm clock 2.Use a sound meter( at the other end of the room) to measure the sound in dB one at a time. 3.Put the material over the sound meter and measure the sound. 4.Record the results in a table.

Results materialVolume (dB) air70 Bubble wrap60 foam70 Cotton wool40 Foam rubber50

Results Material dB

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