Propagation of Sound Waves

• Vibrating body produces sound.
• Vibration motion– to-and-fro or back-and-forth or up-and-down motion of a body.
• Sound is a form of energy that is produced by producing vibration in an object.
• Sound cannot move through vacuum; sound waves are longitudinal waves.

• Sound requires material medium for propagation.
• Sound can travel through solid, liquid or gas.
• Sound cannot travel through vacuum.
• No sound can be heard in outer spaces.

• Sound is a form of energy that is produced by producing vibrations in an object.

• Sound cannot move through vacuum.

• Sound is a wave that requires a medium for its propa…