Plate Tectonics

4. Property, a property used to characterize materials in reactions that change their identity
6. remains or traces of a once living organism reserved by rock
8. Waves, waves that travel outward from an earthquake's focus and move through Earth by causing particles in rocks to vibrate at right angles to the direction of the wave
9. Core, liquid core that surrounds Earth's solid inner core, and that is made mostly of iron
11. fossil formed when an organism is buried, decays, and leaves behind a hollow place in rock
14. the branch of geology studying the folding and faulting of the earth's crust
17. Waves, energy waves that are produced at and travel outward from the earthquake's focus
19. surface along which rocks break and move
20. Core, very dense, solid center od the Earth that is made of mostly iron with smaller amounts of oxygen, silicon, sulfur, or nickel

1. opening in Earth's surface that often forms a mountain when layers of lava and volcanic ash erupt and build up
2. Waves, waves that travel outward from an Earthquake's focus and cause particles in rocks to move back and forth in the same direction the wave is moving
3. powerful seismic sea wave that can travel thousands of kilometers in all directions and that begins over an earthquake focus
5. vibrations caused by breaking rocks along faults
7. measure of the energy released by an earthquake
10. intrusive igneous rock body formed when magma is squeezed into a horizontal crack that cuts across rock layers and hardens
12. fossil formed when sediments fill in a mold and harden into rock
13. single large landmass made up of all the continents connected together that broke apart 200 million years ago
15. Earth's outermost layer, which varies in thickness from about 5km to 60km and is separated from the mantle by the Moho Discontinuity
16. in an earthquake, the point beneath Earth's surface where energy release occurs
18. Tectonics, branch of geology studying the earth's crust