Across
- 5. shaking of the earths crust after the initial shaking of an earthquake
- 7. a huge crack in the earths crust at or below the surface
- 9. a cup like hollow that forms at the top of the volcano
- 11. the sliding of a denser ocean plate under another plate when they collide
- 12. sensitive device that detects the shaking of earths crust during an earthquake
- 14. vibrations that spread out after the initial shaking of an earthquake
- 17. the amount of energy released by an earthquake
- 19. continents drifted apart form eachother
- 20. a wide gently slpoed cone that forms from lava spilling out the side
- 22. a cone formed from explosive eruptions of hot rocks followed by a flow of lava over and over
Down
- 1. hot molten rock below earths surface
- 2. earths solid, rocky surface
- 3. heat from below earths surface
- 4. a central opening in a volcanic area through which magma may escape
- 6. horizontal layers
- 8. the point where an earthquake starts
- 10. a steep sided cone that forms from explosive eruptions
- 13. the idea that earths surface is broken into plates
- 15. the point directly above the focus of the earthquake
- 16. new crust is forming at ridges in the sea floor
- 18. a very hot part of the earths mantle
- 21. the layer beneath earths crust