Guide Questions:
Answer the following questions and write your answer in your
notebook
1. Do thicker rubber band strings have higher or lower sounds
than thinner rubber band strings?
2. Do tighter rubber band strings have higher or lower sounds
than the loose ones?
3. Do shorter strings sound higher or lower than longer ones?
4. What determines whether the sound of a string is loud or soft?
5. What properties of sound are observed in your do-it-yourself
string instrument?
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Answer:
1. The thickness of the rubber band changed the tone of the sound you heard when you plucked it. The thinner strings on a guitar make a higher-pitch sound because they can vibrate more quickly than the thicker ones.
2. The thinner strings on a guitar make a higher-pitch sound because they can vibrate more quickly than the thicker ones. The thinner strings on your rubber band guitar are the same—they vibrate more quickly, and we perceive these vibrations as a higher-pitched sound.
3. When the length of a string is changed, it will vibrate with a different frequency. Shorter strings have higher frequency and therefore higher pitch.
4. A string plucked with force has greater amplitude, and greater amplitude makes the sound louder when it reaches your ear. Volume depends on amplitude. Greater amplitude produces louder sounds.