Across
- 2. Inactive
- 4. Cone-shaped volcanoes made of layers
- 7. Powdery substance excreted from volcanoes
- 10. Fast flow of solid lava, ash and hot gases
- 11. When one crustal plate's edge descends below another's
- 12. A steep,cone-shaped hill with a crater summit
Down
- 1. Semi-molten rock
- 3. Fault caused by divergent plate boundaries
- 5. A tectonic belt of volcanoes and earthquakes
- 6. A rupture in the Earth's crust
- 8. The outburst from a volcano; Hasn't occurred here since 1953
- 9. Magma expelled from the Earth