Asamayama

2. A fast moving current of hot gas and volcanic matter
4. Tectonic belt of volcanoes and earthquakes.
5. Oceanic tectonic plate that lies beneath the Pacific Ocean.
7. Three dimension surface across which there is a significant change in velocity
12. An island of volcanic origin.
13. formed from the cooling and solidification of molten (melted) rock
15. The shaking of the Earth's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves.
16. The solid, outer part of Earth
18. Two plates are moving toward each other
19. Semifluid rock erupted from a volcano.
20. Powdery residue left after the burning of a substance.

1. Uppermost layer of the oceanic portion of the tectonic plates.
3. Layer of igneous, metamorphic, and sedimentary rocks.
6. Special class of mountains.
8. Sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
9. A Mountain or Hill.
10. Upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
11. A place that is very hot.
14. Hot fluid material below within the earth's crust.
17. mixtures of water, volcanic ash, tephra, rock fragments, and chunks of ice that can flow like wet concrete.