character: Harry Hess
topic: Seafloor Spreading Model
grade: 10
subject: Geography
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character: Alfred Wegener
topic: Continental Drift Theory
grade: 10
subject: Geography
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character: Walter Munk
topic: Oceanography and Plate Tectonics
grade: 10
subject: Geography
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character: Frederick Vine
topic: Magnetic Stripes on the Ocean Floor
grade: 10
subject: Geography
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