This is us experimenting with sound. I learned sound waves travel through the string and into the paper clips so we can hear them in the cup.
I've also been experimenting on different surfaces in the bathroom and my singing toothbrush. I have found that depending upon what surfaces I touch it to, it makes it louder, clearer, or fuzzy and quiet. I realized it it is loudest when I touch it to the bottom of the bathtub. I think that is because all the sound waves echo and bounce around in there.
I also went to Science World to see the sound and light displays there this term too.
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