Question

Nawaz has put an electric bell in an airtight plass jar The bell and jar are shown in the
picture below. At first, Nawaz could hear the bell ringing. But when his teacher pumped the air
out of the jar, Nawaz could not hear the bell

a) why couldn't Nawaz hear the bell when the air had been pumped out of the lar?
b) Explain why sound travels faster through water than through air.

Answer 1

Answer:

a) Because sound cannot travel through vacuum

answer of b) in the explanation below

Explanation:

a)  Sound cannot travel through vacuum because there is no medium for the sound to travel, Inside the air tight jar he was able to hear the bell ,but when his teacher sucked the air out of it then there was no medium for the sound to travel hat's why Nawaz was unable to hear the sound

b) the air travels the faster through water than through air because there are less number molecules of air in the atmosphere in a certain area, Where as in water there are more molecules in a certain area

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Answer 2

a)  Sound cannot travel through vacuum because there is no medium for the sound to travel, Inside the air tight jar he was able to hear the bell ,but when his teacher sucked the air out of it then there was no medium for the sound to travel hat's why Nawaz was unable to hear the sound

b) the air travels the faster through water than through air because there are less number molecules of air in the atmosphere in a certain area, Where as in water there are more molecules in a certain area

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