| A | B |
|---|
| mantle | contains the asthenosphere and lithosphere |
| crust | The outer layer where we live |
| core | hottest and most dense layer of the Earth |
| hydrosphere | contains all the salt and fresh water |
| atmosphere | contains the air we breathe |
| biosphere | contains all living and non-living things |
| geosphere | contains all the land forms |
| Continental Drift Theory | Seven continents formed from Pangea |
| Seafloor Spreading | the forming of new oceanic crust |
| convection currents | hot magma rises, cools and hardens in the mantle's asthenosphere |
| boundary | the edge of a tectonic plate |
| subduction boundary | when one plate pushes below another |
| transform boundary | plates cause friction when they slide past one another |
| convergent boundary | two plates colliding together |
| divergent boundary | two plates that spread apart from each other |
| magma | minerals in the form of hot liquid rock; found in the mantle |
| tectonic plate | A large section of the earth's crust |
| continental crust | thick section of earth's crust below the continents |
| oceanic crust | the thin section of the earth's crust that makes up the ocean floors |
| rift | open space created after a divergence occurs |
| Pangaea | super continent |
| Wegener | German scientist rsponsible for Continental Drift Theory |
| mountain are formed by | convergent boundary |
| subduction occurs as a result of a | convergent boundary |
| tranform boundaries cause | Earthquakes |
| divergent boundaries | volcano |
| system | a combination of parts that work together |
