| A | B |
|---|
| continental drift | theory of how continents move over Earth's surface |
| mantle | middle layer of Earth |
| fault | place where pieces of the crust move |
| fossils | remains or traces of past life found in the crust |
| erosion | process of moving sediment from one place to another |
| magma | hot, soft rock from the mantle |
| mass movement | downhill shifting of rock and soil because of gravity |
| deposition | process of dropping sediment in a new location |
| plate | rigid block of crust and upper-mantle rock |
| volcano | opening in the crust through which lava flows |
| core | center and hottest layer of Earth |
| crust | outer, very thin layer of Earth |
| Pangea | "supercontinent" on Earth millions of years ago |
| landform | physical feature on Earth's surface |
| earthquake | shaking of ground from energy release in the crut |
| weathering | process in which soil, sand, and sediment are formed |
