Is it true that the sound produced by an electronic school bell is an example of sound propagation by vibrations?

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True

False

answer is A.

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Detailed Solution

The above statement is True.
Sound waves require a material medium, such as solids, liquids, or gas, to propagate. Sound waves are referred to as mechanical waves because they require a material medium to travel through. The five properties of sound waves are wavelength, velocity, time period, frequency, and amplitude.
The electronic school bell is made up of a hammer and gong that are connected to an outside source of current. When a hammer is used to ring the school bell, it repeatedly strikes the gong, compressing and releasing the air. These vibrations cause the air to begin vibrating, which causes the bell to produce sound as a result.

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