Plate Tectonics by Emily Grugan
Across
- 3. A break in the Earth's crust
- 5. Point of Earth's surface directly above an earthquake's focus
- 6. Outermost, rigid layer of the Earth
- 8. Boundary between two colliding plates
- 11. The bending of rock layers
- 12. Theory that continents drift apart
- 14. Single large landmass made up of all the continents connected together that broke apart 200 million years ago
- 15. Piece of the lithosphere that moves on the asthenosphere
- 18. Outermost layer of the Earth
- 19. Boundary between two plates moving away from each other
- 20. Device used by seismologists to record primary, secondary, suface waves from earthquakes
Down
- 1. Layer between the crust and the core
- 2. new lithosphere is created here
- 4. Soft layer of the mantle
- 7. A region where a an oceanic plate sinks down into the athenosphere
- 9. Solid, dense center of the Earth
- 10. Liquid layer of the Earth's core
- 13. Boundary between two plates that are sliding past each other
- 16. A squeezing force
- 17. A pulling force