| A | B |
|---|
| Crust | The Earth's outermost layer. |
| Mantle | The middle of Earth's three layers. |
| Core | The innermost layer of Earth. |
| Crater | A volcano can fall in on itself, creating a large basin. |
| Fault | A break in Earth's crust along which rocks move. |
| Focus | The point underground where earthquake's movement first takes place. |
| Epicenter | The point on Earth's surface right above the spot where the first movement of an earthquake occurs. |
| Lava | Melted rock that reaches Earth's surface. |
| Magma | Melted rock inside the Earth. |
| Vent | The tube in a volcano that carries hot melted rock to the surface. |
