Q11 of 123 Page 253

What does the working of a toy telephone tell us about sound?

The working of a toy telephone tells us that vibrating objects produce sound and it is carried in all directions in a medium.


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9

Name the sound producing organ in humans.

 10

Which part of our body vibrates when we speak?

 12

Name one solid, one liquid and one gas through which sound can travel.

 13

Which of the following cannot transmit sound?

Water, Vacuum, Aluminium, Oxygen gas