Volcanic Game

2. form when hot, molten rock crystallizes and solidifies
3. A landform that erupts lava
9. a special class of mountains
10. the solid residue left when combustible material is thoroughly burned or is oxidized by chemical means
13. a hot (typically >800 °C, or >1,500 °F ), chaotic mixture of rock fragments, gas, and ash that travels rapidly (tens of meters per second) away from a volcanic vent or collapsing flow front
16. a three-dimensional surface or zone across which there is a significant change in the velocity (speed or direction) of motion of one lithospheric plate relative to the adjacent lithospheric plate.
17. the sudden release of strain energy in the Earth's crust, resulting in waves of shaking that radiate outwards from the earthquake source
19. A geologic process in which one edge of one lithospheric plate is forced below the edge of another
20. an oceanic tectonic plate that lies beneath the Pacific Ocean

1. the denser crustal layer of Earth that makes up portions of tectonic plates in deep oceans
4. melted rock underground
5. the solid, outermost layer of the Earth, consisting of the crust and the upper part of the mantle, essentially the rocky outer part of the planet
6. a portion of the Earth's mantle that flows like molten plastic despite being solid
7. the layer of igneous, metamorphic, and sedimentary rocks that forms the geological continents and the areas of shallow seabed close to their shores, known as continental shelves
8. a string of underwater volcanoes and earthquake sites around the edges of the Pacific Ocean
11. melted rock above ground
12. an island of volcanic origin
14. tending to move toward one point or to approach each other
15. a hot or cold mixture of water and rock fragments that flow quickly down the slopes of a volcano
18. a spot that is very hot underground in the asthenosphere