character: Professor James
topic: The Richter Scale Explained
grade: 9
subject: Geography
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character: Professor James
topic: Understanding Earthquakes: Measurement and Impact
grade: 9
subject: Geography
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character: Professor James
topic: Seismology: How Seismic Waves Work
grade: 9
subject: Geography
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character: Professor James
topic: The History and Development of the Richter Scale
grade: 9
subject: Geography
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