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Question

Sound is produced by vibration. To detect sound, some part of our ear should also vibrate when sound strikes it. Which part of the ear is this and how does it help us in hearing the sound?
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Solution

The vibrating part of our ear is called the eardrum. When a sound strikes the eardrum present inside our ear, it also starts vibrating.
(1 mark)
The eardrum sends these vibrations to the three bones present in the middle ear. These bones amplify the vibrations and send it to the inner ear.
(1 mark)
The inner ear changes this vibrations into electrical signals and sends it to our brain. Our brain interprets these electrical signals as sound. That's how we are able to listen to any sound.
(1 mark)

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