How a sound propagate???

Propagation of Sound

• Sound waves move from the point of generation to the listener through the medium.
• When an object vibrates and produces sound, the particles of the medium at the point of generation begin to vibrate.
• This particle passes on the vibration to its adjacent/neighboring particle. The first particle comes back to its equilibrium position of rest. Then the second particles passes its vibration to the neighboring third particle and then again comes back to its position of rest. This process continues until the vibration reaches the listener and he is able to hear the sound.
• As we see, the actual particles of the medium don't travel from the point of generation to listener. It is only the vibration that travels through the medium. This is called Wave motion.
• A wave is a disturbance that moves through a medium when the particles of the medium set neighboring particles into motion. Since sound waves are characterized by the motion of particles in the medium, they are Mechanical Waves.