character: Dr. Seismo
topic: Seismic Waves
grade: 6
subject: Science
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character: Sally Seismograph
topic: How Seismic Waves are Measured
grade: 6
subject: Science
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character: Tremor Tim
topic: Types of Seismic Waves
grade: 6
subject: Science
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character: Wave Wonder
topic: The Journey of Seismic Waves Through Earth
grade: 6
subject: Science
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