How different would the world be if there were no noises!
The car horn would not sound nor could you hear the noise of the train or the plane when it takes off.
The ringer, The radio and the phone would be quiet.
You couldn't whistle at your dog or hear the cat meow.
You couldn't hear television or listen to music.
How is sound produced?
How do we use it?
Keep reading and you will see.