Sound is a mechanical wave phenomenon and is normally associated with our sense of hearing. Sound is a property of vibrating objects.
- Sound is produced by vibrating sources in a material medium. Medium can be any gas, liquid or solid.
- The vibrating sources set the particles of a medium in vibration in such a way that sound travels outwards in the form of longitudinal waves.
- Some of the energy of the vibrations are transmitted over a distance.
Examples of vibrating sources:
- Musical instruments, like drums, guitar
- Hitting a piece of iron with a hammer
- Loudspeakers (Consists of a cone which vibrates under the effects of electricity and magnetism)
- Explosion resulting from explosives.
Video on production of sound (Note: There is a watermark across the center of the video)