Across
- 1. Term for divergent boundaries in the ocean
- 5. Type of rock that makes up continental crust
- 6. Chemical layer; we live on it
- 9. Earthquake wave that moves land side to side
- 12. Type of volcano with violet & gentle eruptions
- 16. Chemical layer; made of iron and nickel
- 17. Boundary where plates slide past each other
- 18. Type of volcano with gentle eruptions
- 19. Boundary where plates move apart
- 22. Giant wave caused by earthquakes under oceans
- 23. Physical layer; behaves like plastic
- 25. Earthquake wave that travels along the ground
- 28. Type of volcano with sudden, violent eruptions
- 29. Boundary where plates move towards each other
- 30. A crack within earth's crust
Down
- 2. Rock that forms when lava hardens
- 3. Melted rock that is on earth's surface
- 4. This word means "builder"
- 7. Melted rock that is underneath earth's surface
- 8. Term for divergent boundaries in middle of continents
- 9. Tool that measures earthquakes
- 10. Last name of scientist who developed idea of plate tectonics
- 11. Earthquake wave that stretch & compress
- 13. Energy travelling as waves through earth
- 14. Type of rock that makes up oceanic crust
- 15. Chemical layer; ~82% of earth's volume
- 20. Heat transfer method that drives movement of the plates
- 21. Physical layer; made of crust & upper mantle
- 24. Point on earth's surface above the location of an earthquake
- 26. Point within earth where an earthquake took place
- 27. Way of measuring strength of earthquake