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Plate Techtonics
Semester exam
| Term | Definition | |
|---|---|---|
| Pangaea | all the continents were once part of a supercontinent | |
| Continental Drift | suggested that continents are in constant motion on the surface of Earth | |
| Mid-ocean Ridge | The mountain ranges in the middle of the oceans | |
| Seafloor Spreading | the process by which the new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge | |
| Plate tectonics | earths surface is made if ridge slabs of rocks or plates that move with respect to each other | |
| Lithosphere | the cold and rigid outermost layer | |
| Divergent Plate Boundary | forms where tow plates separate | |
| Transform plate boundary | form where two plates slide past each other | |
| Convergent Plate boundary | form where two plates collide | |
| subduction | the denser plate sinks below the more buoyant plate in a process | |
| Convection | the circulation of a material caused by differences in temperature and density |