character: Sound Scientist
topic: Exploring Sound Waves and Patterns
grade: 9
subject: Physics
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character: Wave Master
topic: Understanding Wave Interference
grade: 9
subject: Physics
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character: Frequency Finder
topic: Measuring Frequency and Pitch
grade: 9
subject: Physics
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character: Echo Explorer
topic: Analyzing Echoes and Sound Reflection
grade: 9
subject: Physics
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