| A | B |
|---|
| Magma Chamber | the pocket beneath a volcano where magma collects |
| Pipe | long tube through which magma moves from the magma chamber to Earth's surface |
| Vent | an opening through which molten rock and gas leave a volcano |
| Lava Flow | area covered by lava as it pours out of a volcano's vent |
| Crater | a bowl-shaped area that forms around a volcano's central opening |
| Silica | material found in magma that forms from the elements oxygen and silicon |
| Pyroclasic Flow | mixture of hot gases, ash, cinders, and bombs that flow down the sides of an explosive volcano |
| Dormant | a non-active volcano that could be expected to awaken in the future and become active |
| Extinct | a volcano that is unlikely to ever erupt again |
| Quiet Eruption | volcano with hot magma or low in silica, producing different types of lava |
| Explosive Eruption | Volcano with magma high in silica |
