Sound is caused by the vibrations of the sound source.
Hence, the statement is true.
What is meant by noise pollution ? Name one source of sound causing the noise pollution.
All sound waves are caused by vibrations.
It is said that sound is caused by vibrating columns in air. When we blow on the mouth of the bottle it produces a sound. How does this sound come since there is no vibration and if there is vibration, where is it?