character: Wave Whisperer
topic: Sound Waves and Their Behavior
grade: 9
subject: Physics
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character: Mr. Soundwave
topic: Properties of Sound Waves
grade: 9
subject: Physics
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character: Echo Explorer
topic: Reflection of Sound Waves
grade: 9
subject: Physics
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character: Frequency Finder
topic: Understanding Wave Frequencies
grade: 9
subject: Physics
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