click below
click below
Normal Size Small Size show me how
Plate Tectonics
Semester Exam
| Term | Definition |
|---|---|
| Pangaea | all the continents were once part of a supercontinent. |
| Continental Drift | suggested that continents are in constant motion of the surface of Earth. |
| Mid-ocean Ridge | The mountain ranges in the middle of the oceans. |
| Seafloor Spreading | The process of by which new oceanic crust forms along a mid-ocean Ridge and older oceanic crust moves away from the ridge. |
| Plate Tectonics | Earth's surface is made of 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 two plates separate. |
| Transform Plate Boundary | Forms where two plates slide past each other. |
| Convergent Plate Boundary | Forms where two plates collide. |
| Subduction | The denser plate sinks below the more buoyant plate in a process. |
| Convection | The circulation of material caused by differences in temperature and density. |