Plate Tectonics

1. Alfred Wegener presented four evidences that proves the existence of a super continent.

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2. The super continent that existed 250 millions years ago is also known as Laurasia.

3. The mantle convection theory was proposed by Larry Holmes in 1929.

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4. The convergent boundary is marked a mid-oceanic ridge, that is, responsible for the seafloor spreading.

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5. Old oceanic crust will be consumed by the ridges to form new magma.

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6. The first evidence of the Continental Drift Theory was the apparent fit of the two continents, Europe and Africa.

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7. Subduction zones can located in the region of divergent boundary.

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8. Glossopteris is a pre-historic freshwater reptile whose fossils were found in both South American and African continents.

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9. Harry Hess was the geologist who introduced the concept of seafloor spreading.

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10. The boundary that slides into each other is also known as the constructive boundary.

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