Across
- 2. a long mountain chain on the ocean floor at divergent boundaries created by sea floor spreading
- 6. Giant wave caused by and undersea Quake
- 7. the large single landmass which existed about 250 million years ago
- 11. The boundary where plates move away from each other;mainly under the ocean
- 13. the point on Earth's surface directly above the focus
- 14. the underground origin of the Earthquake
- 15. the magma layer below the crust where convection current occur
- 18. the outermost rock layer of the Earth
- 19. circular flow of energy in the mantle caused by hot rock near the core rising towards the crust, and cooler rock near the crust sinks towards the core
- 20. When plate collide creating trenches volcanoes and mountains
Down
- 1. deepest part of the ocean; in the subduction zone
- 3. the theory that states Earth was comprised of one giant landmass which has slowly drifted apart
- 4. scientific theory that states the Earth's lithosphere to comprise a number of large tectonic plates which have been slowly moving since about 3.4 billion years ago
- 5. at a divergent boundary where the ocean floor spreads apart
- 8. the place on a convergent boundary where one plate is subducted beneath the other plate
- 9. waves of energy that radiate in every direction coming from an Earthquake
- 10. sudden movement of the Earth's crust causing the Earth to shake
- 12. plate boundary where the plates move in opposite directions; Example San Andreas Fault
- 16. a scale from 1- 10 that tells us the magnitude or intensity of the Earthquake.
- 17. the area where two tectonic plates meet; earthquakes happen here