Our clever 5 year old scientists found out that sounds can be LOUD or quiet.
To make a loud sound they found out that you had to hit the drum hard and quickly and to make a quiet sound they had to hit the drum softly and slowly.
The picture above shows how an ice cream container was used to make the sound of the rubber band twang louder. This is just like how the body of the guitar makes the sound of the strings louder.
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