character: Harmony Hannah
topic: How Wavelength Influences Pitch and Harmony in Sound
grade: 9
subject: Physics
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character: Sound Sam
topic: The Relationship Between Frequency and Pitch
grade: 9
subject: Physics
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character: Pitchy Pete
topic: Exploring Sound Waves and Their Musical Applications
grade: 9
subject: Physics
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character: Wave Wendy
topic: Understanding Frequency, Amplitude, and Sound Perception
grade: 9
subject: Physics
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