Novarupta Knowledge

2. Fast-moving current of hot gas and volcanic matter
6. An area where magma rises through the crust above it
9. Another term for Mudflow
10. A mountain which has a vent for magma to eject
12. The collision of two plates
13. The sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate
15. Rock formed from the cooling of magma
16. The release of built-up energy in the Earth's crust
17. Molten rock below or inside the Earth's crust
18. The location where two plates meet
19. Denser plates which lie under the ocean

1. A tectonic belt of volcanoes and earthquakes
3. Powdery substance from burnt material
4. An opening in the Earth's crust where magma and ash can escape through eruption
5. Molten rock which has reached Earth's surface
7. Earth's mantle below the Lithosphere
8. The crust and uppermost mantle of the Earth
10. An island of volcanic origin
11. Less dense plates which lie under land masses
14. An oceanic tectonic plate which lies beneath the Pacific Ocean