| A | B |
|---|
| Weak spot in the Earth's crust | Volcano |
| Molten material inside the Earth's crust | Magma |
| Molten material that erupts fron volcanoes | Lava |
| Belt of volcanoes that rim the Pacific Ocean | Ring of Fire |
| Molten material rises to the surface, while oceanic plates move accross | Hot Spots |
| A liquid's resistance to flow | Viscosity |
| A liquid moves very slowly (ie. honey) | High viscosity |
| A liquid moves very quickly (ie. water) | Low viscosity |
| Pocket of magma inside volcano | Magma chamber |
| Opening where magma exits | Vent |
| Narrow tube connecting the magma chamber to the surface. Where magma rises up. | Pipe |
| A volcano that is in "sleep" mode | Dormant |
| An inactive volcano | Extinct |
