| A | B |
|---|
| landform | physical feature on Earth's surface |
| weathering | process of breaking rock into soil, sand, or other tiny pieces |
| erosion | process of moving sediment from one place to another |
| deposition | process of dropping, or depositing, sediment in a new location |
| mass movement | downhill movement of rock and soil because of gravity |
| crust | outer layer of Earth made of solid rock |
| mantle | layer of rock beneath Earth's crust |
| core | center layer of Earth (the hottest) |
| plate | rigid block of crust and upper mantle |
| magma | hot, soft rock from earth's lower mantle |
| volcano | opening in Earth's crust through which lava flows |
| earthquake | shaking of the ground caused by the sudden of energy in earth's crust |
| fault | place where pieces of Earth's crust move |
| continental drift | theory of how Earth's continents move over its surface |
| Pangea | supercontinent (225 million years ago) |
| fossils | remains or traces of past life found in Earth's crust |
