plate tectonics
Across
- 3. person who studies earthquakes
- 5. break in earth's crust
- 7. squeezing force
- 9. boundary between two colliding plates
- 10. solid dense center of the earth
- 11. outermost rigid layer
- 12. the point directly above the focus
- 13. theory proposed by Alfred Wegner
- 15. piece of the lithosphere that moves on the asthenosphere
- 18. boundary between two plates moving away
- 19. bending of rock layers
- 20. measure of energy released in an e-quake
Down
- 1. layer between the crust and core
- 2. where energy is being released from an earthquake
- 4. where an oceanic plate sinks down into the asthenosphere
- 6. layer of the mantle
- 8. pulling force
- 14. boundary between two plates sliding past each other
- 16. liquid layer of earth's core
- 17. outermost layer of the earth