character: Seafloor Spreading
topic: Theory of Seafloor Spreading and its role in Plate Tectonics
grade: 10
subject: Geography
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character: Harry Hess
topic: Proposed the theory of seafloor spreading in the 1960s
grade: 10
subject: Geography
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character: Alfred Wegener
topic: Continental Drift theory, precursor to plate tectonics and seafloor spreading
grade: 10
subject: Geography
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character: Mid-Ocean Ridge
topic: Location where seafloor spreading occurs, creating new oceanic crust
grade: 10
subject: Geography
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