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character: Professor Wave
topic: Properties of Sound in Different Mediums
grade: 4
subject: Science
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character: Professor Wave
topic: Understanding Sound Travel in Air and Water
grade: 4
subject: Science
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character: Professor Wave
topic: How Sound Changes in Solid, Liquid, and Gas
grade: 4
subject: Science
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character: Professor Wave
topic: The Speed of Sound in Various Materials
grade: 4
subject: Science
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