Geology

2. Large pieces of Earth's crust that move and cause earthquakes and volcanoes.
4. A boundary where two plates move away from each other.
5. Waves Vibrations that travel through the Earth during an earthquake.
9. When one plate sinks under another plate.
13. A sudden shaking of the ground caused by moving plates.
15. Heat movement in the mantle that causes plate motion.
17. The layer beneath the crust where convection causes plate movement.
18. Spot A fixed place where magma melts through the crust to form volcanoes.

1. An underwater mountain range formed at divergent boundaries.
3. A boundary where two plates slide past each other.
6. Melted rock beneath Earth’s surface.
7. A boundary where two plates move toward each other.
8. A landform created when plates push together and crust crumples.
10. A crack in Earth’s crust where movement happens.
11. Magma that has reached the surface of Earth.
12. The place underground where an earthquake begins.
13. The point on Earth’s surface directly above the earthquake's origin.
14. of Fire An area around the Pacific Ocean where many volcanoes and earthquakes occur.
15. The thin, outer layer of Earth we live on.
16. A mountain that forms when magma erupts through the crust.