| A | B |
|---|
| Volcano | An opening in the ground where magma from deep inside the earth forces its way to the surface |
| Crater | A funnel-shaped hollow at the top of a volcanic cone |
| Active volcano | A volcano that has erupted recently and is likely to erupt again |
| Dormant Volcano | A volcano that has erupted in the last 2000 years, but not recently. |
| Extinct volcano | A volcano that is unlikely to ever erupt again. They are dead and their volcanic activity has finished |
| Volcanic bombs | lumps of motlen rock that solidify as they fall |
| Magma chamber | A store of molten rock deep inside the earth |
| Seconday cone | These form if the main vent is blocked and the magma is forced to the surface by another route. |
| Falling ash | Small pieces of shattered rock thrown from the volcano |
| Lava | Molten rock that becomes this once it has come out of the ground. |
