character: Olivia Johnson
topic: Using Sonar Technology for Marine Research
grade: 9
subject: Physics
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character: Dr. Emily Carter
topic: The Physics of Sound Waves in Water
grade: 9
subject: Physics
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character: Captain Mike Thompson
topic: Exploring Ocean Depths with Sonar Technology
grade: 9
subject: Physics
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character: Professor Annie Reyes
topic: Marine Ecosystems and Sonar Research
grade: 9
subject: Physics
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