oceanography 101 PLATE TECTONICS question

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funaaba23

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1. PLATE TECTONICS

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Imagine that you have taken a time-machine back to the early 1900s and are meeting Alfred Wegener for lunch. He is very depressed because almost no one believes his theory of continental drift. Explain to him how science in the decades after his death will confirm his theory and expand it into the larger theory of plate tectonics. In your explanation to him, be sure to explain:

- Key discoveries about the ocean floor that happened since his day. (Note: in Wegener's day, almost nothing was known about the ocean floor. Think about how that later changed, and how it relates to continental drift.)
- Evidence that proves that the sea floor spreads and that the earth's surface is divided up into moving plates. (Hint: this evidence includes paleomagnetism, the age of the sea floor, heat flow, and earthquakes.)

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