| A | B |
| volcano | a cone-shaped landform, made by lava |
| volcanologist | a scientist who studies volcanoes |
| lahar | mud flow that happens when rain falls through clouds of ash |
| crater | a small hole that forms when rock explodes during a volcano eruption |
| geologist | a scientist who stuides the history and structure of the earth |
| lava | melted (molten) rock on the earth's surface |
| lava dome | a steep-sided dome that forms at the top of a volcano |
| lava flow | lava that flows quickly over the earth and covers a large place |