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plate tectoniics
simaster exam
| Term | Definition |
|---|---|
| Pangaea | all the continents were once apart of a supercontinent |
| continental drift | suggested that contenionts are in constant motion on the surface of earth |
| mid-ocean ridge | the mountains ranges In the middle of the oceans |
| seafloor spreading | the process by which new oceanic crust along a mid-ocean ridge and older oceantic crust |
| plate-tecktonics | a plate that moves with respect to each other |
| lithosphere | the cold and most rigid outermost layer |
| divergent plate boundary | when two plates separate |
| transform plate boundary | when 2 plates slide past each other |
| convergent plate boundary | when 2 plates collide |
| subduction | the Denver plate sinks below the more buoyant plate in a process |
| convection | the circulation of material coused by different tempeture and dencity |