Explain with an activity to identify pitch or shrillness of a sound ?
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When the rubber bands are plucked in order, from thinnest to thickest, the sound will gradually change from a high pitch to a low pitch. When a ruler "bridge" is added, it absorbs some of the vibrations. The length of the rubber band that is able to vibrate becomes shorter....
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Explanation:
When a ruler "bridge" is added, it absorbs some of the vibrations. The length of the rubber band that is able to vibrate becomes shorter. The shorter bands will vibrate faster, producing a higher pitch. ... The shorter length of rubber band makes a high, short sound and vibrates at a faster rate or frequency.
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