Plate Tectonics
Across
- 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
Down
- 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