Question

describe on experiment to prove that sound needs a material medium to travel
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Answer 1

Answer:

Bell jar experiment

Explanation:

The experiment is done by placing an electrical bell in the bell jar. As the air is pumped out of the sealed bell jar, the sound from the bell jar fades. At a particular vacuum, no more sound is heard from the bell, but we can see that the hammer continues hitting the gong and sound is produced. However, the sound is not audible to our ears because of the vacuum inside the jar. This demonstrates that the sound wave cannot travel through vacuum. That is, a sound wave needs a material medium for its propagation.

Answer 2

Answer:

air

Explanation:

air airhi it hi iu there too to