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If a tree falls in a forest and no one is around to hear it does it make a sound? Let's find out with the help of Alejandro Melendez from Liberty Science Center. In this clip you will learn that sound travels through many vibrations. With the help of a Chladni Plate, we can see the pattern structures of sound movements. Let's create our own Chladni Plate!
![airballoon-racoon-hmm](https://www.camptv.org/wp-content/uploads/2022/05/airballoon-racoon1.png)