character: Refraction Investigator
topic: Seismic Refraction Techniques
grade: 9
subject: Science
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character: Seismic Expert
topic: Understanding Refraction in Waves
grade: 9
subject: Science
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character: Geophysics Explorer
topic: Applications of Seismic Refraction
grade: 9
subject: Science
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character: Physics Enthusiast
topic: Light and Sound Refraction Principles
grade: 9
subject: Science
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