| A | B |
|---|
| metamorphic | A rock that is changed into another kind of rock by heat and pressure. |
| igneous | A rock that is formed by heat. |
| sedimentary | A rock that is formed in layers underwater. |
| volcano | A mountain that erupts. |
| magma | This is molten rock under the ground. |
| lava | This is what the molten rock is called that comes out of a volcano. |
| vent | A tunnel that allows magma to escape out the side of the volcano. |
| smoke, ash, and rocks | Items that signal a volcano is going to erupt. |
| fault | Cracks in the crust where two of the Earth's plates meet. |
| earthquake | A slipping or sliding of the Earth's crust. |
| island | Formed by an underwater volcano |
| molten | Melted rock |
