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Questions for Discussion: Pitch: Making Guitars
Use the example of the rubber band guitar to explain how we hear sounds. What starts the rubber band vibrating? Why do you think making the rubber band tighter changes the pitch? Does the size of the box make any difference? If so, what is its effect? How does changing the size of the rubber band change the sound produced from the same box? Do you agree or disagree with the boy's ideas about why the pitch is different for the oatmeal box than the cereal box? Why? What evidence convinces you that vibrations travel through air?
