Although it does make a sound it's just not loud enough. Now what we need to do is finda way of making the sound louder. "Yes we need to amplify it." "Right are you sitting comfortably?" ...

"So sound waves are invisible" but another way of imagininghow they work is to use this bowl of waterand a tuning fork. Tuning forks are usedby musicians to make sure "that their instruments are ...