| Question | Answer |
|---|---|
| Continental drift | Is the hypothis that states that the continents once formed a single landmass |
| Pangaea | A single giant continent, Wagner thought broke apart, then drifted to their present location |
| Sea floor spreading | Is the process by which new ocean lithosphere forms as magma rises toward the serface and solidifies. |
| Plate tectonics | Is the the theory that the eartha??s lithosphere is divided into tectonic plates. |
| Convergent boundary | When two tectonic plates collide. |
| Divergent boundary | When two tectonic plates separate |
| Transforming boundary | When tectonic plates slide pass each other |
| Covection currents | Hot circules |
| Wegener | |
| The man who came up with Pangea and plate tectonics | |
| Volcano | Areas of the eartha??s surface through which magma and volcanic gases pass |
| Hot spots | Are volcanically active places on the eartha??s surface that are far from plate boundaries |
| Mid ocean ridges | Under water mountain chains that run through the eartha??s ocean basins |
| Subduction | When rock becomes cool and more dense it sinks |
| Vent | An opening at the surface of the earth through which volcanic material passes through |
Plate tectonics