| A | B |
|---|
| crust | the outer layer of Earth |
| mantle | a mixture of solid and molten rock that makes up the thick layer between the crust and the core |
| core | the innermost layer of Earth, which consists of a molten outer part and a solid inner part |
| lava | melted rock material that reaches Earth’s surface before it cools and hardens |
| magma | melted rock material that forms deep below Earth’s surface |
| tectonic plates | giant slabs of rock that make up the sections that the Earth’s crust is broken into |
| plate boundary | the place where plates meet |
| convergent boundary | plates push together |
| divergent boundary | plates pull apart |
| transform boundary | plates slide by each other |
| erosion | the wearing away and removing of rock and soil caused by such forces as wind and flowing water |
| weathering | the breaking up of rocks into sediments by such forces as wind, rain, and sunlight |
| deposition | the process of dropping, or depositing, sediment in a new location |
| fault | a crack in Earth’s crust (where pieces of the crust move) |
| earthquake | is the vibration caused by movements within Earth |
| volcano | is an opening in Earth’s crust through which lava and other materials flow and collect |
