| A | B |
|---|
| boundary | something that indicates a border or limit |
| Continental Drift | the movement, formation, or reformation of continents described by the theory of plate tectonics |
| Convergent Boundary | A plate boundary where 2 plates collide together |
| Divergent Boundary | A plate boundary where 2 plates pull apart from each other |
| Transform Boundary | plate boundary where 2 plates slide along each other in opposite directions |
| Pangea | the first supercontinent |
| core | center of the earth |
| mantel | the middle layer of the earth |
| tectonics | build up |
| plate | is a large, rigid slab of solid rock |
| Alfred Wegener | came up with the theory of continental drift |
| sea floor spreading | New magma from deep within the Earth rises easily through these weak zones and eventually erupts along the crest of the ridges to create new oceanic crust |
| convection | The mobile rock beneath the rigid plates is believed to be moving in a circular manner |
| natural hazards | . earthquakes and volcanic eruptions, and Tsunamis |
| subduction zones | the process in which one plate goes underneath (or subducts) the other |
| hot spots | is actually a rising plume of hot mantle material underneath the earth's crust |
