Across
- 3. A number of rigid, but moving, pieces of the Earth's surface.
- 6. The shaking of Earth's crust.
- 7. Surface along which rocks break and move.
- 8. The partially melted layer of the mantle that underlies the lithosphere.
- 9. Forms when two (Crustal) Lithospheric plates slide past each other.
- 10. Forms when two (Crustal) Lithospheric Plates move apart.
- 12. States that youngest rocks of ocean floor are at divergent boundaries, moving outward.
- 14. The layer of the Earth between the crust and the core.
- 15. Waves of energy that reach Earth's surface during an earthquake, travel outward from the epicenter, and move rock particles up and down, and side to side.
- 17. A long narrow valley on an ocean or sea floor.
- 18. The outer shell of Earth that extends to a depth of 100 km.
- 20. Energy waves that are produced at and travel outward from the earthquake's focus.
Down
- 1. 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.
- 2. A hypothesis proposed by Alfred Wegener that the states that continents have moved slowly to their current locations on Earth.
- 4. Forms when two (Crustal) Lithospheric Plates come together.
- 5. Single large landmass made up of all the continents connected together that broke apart 200 million years ago.
- 11. 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.
- 13. The theory that Earth's crust and upper mantle are broken into sections.
- 16. In an earthquake, the point beneath Earth's surface where energy release occurs.
- 19. Opening in Earth's surface that often forms a mountain when layers of lava and volcanic ash erupt and build up.