What is sound and how is it produced ?

Explanation

Sound is a form of energy which usually produces the sensation of hearing in ears.
(ii) Sound can be produced in different ways. They are-
(a) By stricking: For example, if we hit a metal plate with a stainless steel spoon and touch the plate gently we can feel the vibrations and also hear the sound.
(b) By pluching: When we pluck the wires of a guitar, sitar or any other string instrument the wries vibrate and a sound is produced.
(c ) By blowing air: When we whistle through the mouth or play a flute the air column vibrates, so a sound is produced.
(d) By rubbing: When we rub our palm or drag a table on the floor a sound is produced. Thus, we see that a sound is produced by a body only when it vibrates.