Across
- 3. an instrument that records ground movement
- 6. kind of wave released during an earthquake
- 7. center of the earth
- 9. part of the mantel below the lithosphere
- 12. large wave caused by earthquakes on the ocean floor
- 13. an earthquake that occurs when another earthquake
- 14. scientists that study rocks
Down
- 1. when earths tectonic plates converge
- 2. when two plates collide
- 4. rock that makes up the oceanic crust
- 5. When an earthquake turns soil into mud
- 8. used to map an oceanic ridge
- 10. section of the lithosphere that carries the crust
- 11. earths middle layer