Question

Experimental show that sound need a medium to travel

Answer 1

Answer:

Materials needed:tall glass jar,bell,candle

Method:take a glass jar. attach a small bell to the bottom of the cap of the jar. close the jar with the cap. shakethe bottle and note the sound made by bell. now open the jar,place lighted candle in it and close thr jar again. wait for the candle to be extinguished. shake the bottle again. the sound is not produced.

the oxygen is taken up by the candle.

so the bell does not produce any sound.

This proves that sound needs a medium to travel.

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HOPE THIS HELPS!!

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