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Pangea
| Question | Answer |
|---|---|
| The young German scientist that formed a hypothesis that Earth's continents had moved. His hypothesis was that all the continents had once been joined together in a single landmass and have since drifted apart. | Alfred Wegener |
| The supercontinent that names means "all lands." | Pangea |
| Pangea existed this many years ago | 300 million |
| the idea that the continents slowly moved over Earth's surface | continental drift |
| Wegener gathered evidence from three different scientific fields to support his idea of continental drift. What three fields? | land features, fossils and evidence of climate change |
| Evidence of land features | Mountain ranges in South America and Africa line up. European coal fields match with similar coal fields in North America |
| Evidence from fossils | fossils of the plant glossopteris and fossils of the reptiles Mesosaurus, and Lystrosaurus have been found on widely separated landmasses. |
| Evidence from climate change | Fossils of tropical plants found near the Arctic Ocean Scratches made from glaciers found in South Africa |
| any trace of an ancient organism perserved in rock. | fossils |
| Did Wegener think that the Earth's climate has changed? | No, Wegner believed that the Earth's climate did not change but the positions of the continents have changed. |
| Why did scientists reject Wegener's theory for nearly half a century? | Wegener could not provide an explanation for the force that pushes or pulls the continents. He could not provide a cause of continental drift. |
| The name of a single landmass that began to break apart 200 million years ago and gave rise to today's continents. | Pangea |
| The preserved remains or traces of organisms that lived in the past | fossils |
| a section of the lithosphere that slowly moves over the atmosphere carrying pieces of continental and oceanic crust | plate |
| A plate boundary where two plates move toward each other | convergent boundary |
| A plate boundary where two plates move away from each other | divergent boundary |
| A plate boundary where two plates move past each other in opposite directions | transform boundary |
| the theory that pieces of the Earth's lithosphere are in constant motion, driven by convection currents in the mantle | plate tectonics |
| A break in the Earth's crust along where rocks move. | fault |
| A deep valley that forms where two plates move apart | rift valley |
| The hypothesis that the continents slowly moved across the Earth's surface. | continental drift. |
| Alfred Wegener's book where he presented evidence of Pangea | The Origin of Continents and Oceans |
Created by:
jromerond