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STC Unit Descriptions
Sound
ISBN 0-89278-966-2
Subject: Characteristics of sound
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Materials included in the Sound unit kit.
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Students use tuning forks, slide whistles,
strings, and other sound-producing objects to investigate the characteristics of
sound. They learn that sound is caused by vibrations and explore how
sound travels. They learn about the relationship of pitch and volume to the
frequency and amplitude of vibrations. They discover, for example, that they can
alter pitch by varying the length or tension of a string. Constructing simple
stringed instruments, they discover how they can increase the volume of the
sound produced by the strings. Students investigate the characteristics of
another common sound-producing mechanism—the human vocal cords—and build model
vocal cords. They also learn about the anatomy and functioning of the human ear.
They apply what they learn in the unit by designing and building musical
instruments or other sound-producing devices.
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