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1. Volcano A weak spot in the crust where magma comes to the surface.
2. Lava Molten rock above the earth's surface.
3. Magma Molten material beneath the earth's crust.
4. Ring of Fire All the volcanoes on the rim of the Pacific Ocean.
5. Hot Spot A region of molten rockbeneath the crust.
6. Sheild volcano A broad, domed, volcano with sloped sides.
7. Composite volcano A large, steep, volcano built up from layers of ash and lava.
8. Cinder Cone volcano A steep, cone shaped, volcano.
9. Sill When magma squeezes itself between layers of rock.
10. DIke When magma forces itself across layers of rock
11. batholith A large body of magma that hardens.
12. Lava plateau A high, flat, piece of land built by lava.
13. extinct No longer in existence.
14. dormant Inactive. Asleep
15. active Awake, being in the state of existence.
16. Element A substance that cannot be broken down into other substances.
17. Viscosity Determines weather a liquid flows fast or slow.
18. Silica A substance that makes magma thicker.
19. Pahoehoe Hot, fast-moving lava.
20. aa Cool, slow-moving lava.
21. Compound A substance made of two or more elements.
22. Volcanic Ash Fine rocky particles as small as a speck of dust.
23. Magma chamber An area underground that hold the volcanoes magma.
24. Crater The hole at the top of a volcano.
25. Vent A crack in the earth's crust.
26. Pipe A vertical hole which magma comes up to a volcano.
27. Caldera Happens when a volcano collapses.
28. Hot spring A spring of naturally hot water.
29. Geyser A hot spring where water shoots up in the air.
Created by: 1964968236