1. Sound is a form of energy.
2. It is produced by vibrating objects or bodies.
3. Sound waves are longitudinal waves.
4. It needs medium to travel.
5. The speed of sound is different for different medium.
6. The speed of sound is 332 m/s in air at 0⁰ C.
Types of sound:
Its mainly of following types on the basis of frequencies:
1. Audible Sound waves
2. Infrasonic Sound waves
3. Ultrasonic Sound waves