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Plate Tectonics
Question | Answer |
---|---|
CONTINENTIAL DRIFT | Theory ALL continents once fit together into a single giant continent (by Alfred Wegner); Continents gradually drifted apart to the present day; Also known as Pangaea or Gondwana |
Evidence Supporting CONTINENTAL DRIFT | (1) Reptile fossils found in South America and Africa; (2) Same plant fossils found in 5 separate regions; (3) Similar rock formations found among continents |
PLATE TECTONICS | Theory Earth’s surface (the lithosphere) is divided into several large slabs that moves; Also known as the “tectonic plates” |
DIVERGENT Plate Boundary | Movement of Earth’s plates; Two “tectonic” plates moving away from each other |
CONVERGENT Plate Boundary | Movement of Earth’s plates; Two “tectonic” plates come toward each other |
TRANSFORM Plate Boundary | Movement of Earth’s plates; Two “tectonic” plates slide past one another in the OPPOSITE direction or in the SAME direction at DIFFERENT speeds |