When you tap a glass of water with a pencil or spoon the water molecules vibrate and create sound waves through the water. More water means slower vibrations and a deeper tone. Each of the bottles will have a different pitch when hit with the pencil.
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Answer:
Explanation:
When you tap a glass of water with a pencil or spoon the water molecules vibrate and create sound waves through the water. More water means slower vibrations and a deeper tone. Each of the bottles will have a different pitch when hit with the pencil.