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Continental Drift
Review of Continental Drift Vocabulary
| Term | Definition |
|---|---|
| Continental Drift Theory | the gradual movement of the continents across the earth's surface through geological time. |
| Plate Tectonics | a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle. |
| Glacial Evidence | The evidence shown from scratches on the bedrock made by blocks of rock embedded in the ice as the glacier moves. These show the direction of the glacier, and suggest the ice flowed from a single central point |
| Fossil Evidence | The evidence of similar fossils on different continents that supports the continental drift theory |
| Pangaea | A supercontinent that included all the world's landmasses in the late Paleozoic and, according to the theory of plate tectonics, |
| Laurasia and Gondwanaland | The two major landmasses that joined together to form Pangaea |
| Glossopteris | Fossilized woody plants known from rocks that have been dated to the Permian and Triassic periods (roughly 300 to 200 million years ago), deposited on the southern supercontinent of Gondwana. |
| Mesosaurus | A freshwater crocodile-like reptile that lived during the early Permian (between 286 and 258 million years ago), are found solely in Southern Africa and Eastern South America. It is found as fossils only in South Africa and South America. |
| Lystrosaurus | Another piece of evidence of continental drift . Their fossils are found in Antarctica, India and South Africa |
| Cynognathus | it was as large as a modern wolf and lived during the early to mid Triassic period (250 to 240 million years ago). It is found as fossils only in South Africa and South America. |
| Continental Fit Evidence | The continents fit together like pieces of a puzzle. Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea |
| Continents | Any of the world's main continuous expanses of land (Africa, Antarctica, Asia, Australia, Europe, North America, South America |
| Alfred Wegener | A German polar researcher, geophysicist and meteorologist. He proposed the theory of continental drift and Pangaea |
| Landform/Rock Layers Evidence | Rock sequences in South America, Africa, India, Antarctica, and Australia show remarkable similarities. Wegener proposed that the rock layers were made when all the continents were part of Pangaea. |
Created by:
klstorie
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