| A | B |
|---|
| geosphere | the solid portion of Earth including landforms, rocks, minerals and soil, as well as the interior. |
| tectonic plates | extremely large pieces of lithosphere |
| biosphere | the part of the world in which life can exist |
| constructive processes | process that builds up landforms |
| continental drift | the gradual movement of continents by tectonic plates under Earth's surface |
| convection currents | the path along which energy is transferred during convection. |
| converging | plate boundaries of Earth's crust pushing together |
| crust | the thin outer layer of Earth |
| destructive processes | process that destroys landforms |
| lithosphere | the solid rocky outer layer of the Earth that includes the crust |
| mantle | layer of hot rock between Earth's crust and core |
| plate boundaries | the edges where two or more plate boundaries meet |
| plate tectonics | theory that states that the lithosphere is broken into plates that move |
| rift valley | a valley that develops when two tectonic plates move apart and the land in the middle drops down |
| ring of fire | an area associated with plate boundaries around the Pacific Ocean that has a large amount of volcanic and earthquake activity |
| geothermal | the internal heat of Earth |
