| A | B |
|---|
| an opening in earth's surface that often forms a mountain when an eruption occurs. | volcano |
| An opening in earth's surface where lava flows out. | vent |
| A steep wall depression around the volcano's vent. | crater |
| A long deep crack that develops where crustal plates separates. | rifts |
| Areas of the mantle which are hotter than others and melt rock. | hot spots |
| Not currently active | dormant |
| Largest erruption of the century | Mount Katmai |
| Largest of any erruption in 750 years. Caused a lowering of global temperatures and record ozone loss. | Mount Pinutubo |
| Hot rock that is inside a volcano before it flows out. | Magma |
| Hot molten rock that flows out of a volcano. | Lava |
