Explain how sound is produced by your school bell ?

Explanation

If it is an electric bell when the switch is pressed electric charges flow through the wire and the hammer strikes the gong. This produces vibrations. If it is a manual beel then vibrations are produced by hitting the sound plate with a stick. When an object vibrates, then the air layers around it also start vibrating in exactly the same way. These layers of air carry sound waves from the sound producing object (bell in this case) to our ears. During the transmission no actual movement of air from the bell to our ear takes place. The air layers only vibrate back and forth and transfer the sound energy from one layer to the next layer till it reaches our ear.