What is sound and how is it produced?
Sound is a form of energy which produces a sensation of hearing in our ears. Vibrating any object produces sound.
For example, when a bell is rung, we hear a sound. We can feel the vibrations by touching the ringing bell.
Plucking a string of guitar or sitar produces sound. The vibrations of the string can be observed.
The sound of human voice is produced due to the vibrations in the vocal cord.
When a bird flaps its wings, again a sound is produced.