Question

Figure above shows an experiment in which a bell rings inside the glass jar. Sound is heard outside the jar.
1. How sound is transmitted by the molecule of the air and the jar ?
2. State and explain what is heard outside the jar as the air is removed from the jar ?
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Answer 1

Answer:

Hi your answer is as follows

Explanation:

1)

Sound needs a medium in which to travel.Sound always travels in the form of waves not straight line so therefore, Sound waves cannot form unless there are molecules to bump into each other to pass the wave form along .

2)

As the air is slowly pumped out of the jar the ringing bell is seen to be still moving but the sound gradually diminishes until it cannot be heard at all when there is no air in the jar (vacuum). So therefore we conclude that sound cannot travel in vacuum.

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