Across
- 2. a huge crack in earth's crust
- 6. the boundary where plates are colliding
- 8. the amount of energy released by an earthquake
- 11. the sliding of denser ocean plate under another plate when they collide
- 14. The idea that many kinds of rocks form flat,horizontal layers
- 15. earths solid,rocky surface containing the continents and ocean floor
- 16. the boundarie where plates are sliding past eachother
- 18. the point in the earth where earth quakes actually start
- 19. the name of a large super continent
- 20. the point on earths surface directly above the focus
Down
- 1. the idea a super continent split apart into peices,the continents,which drift into their present locantions
- 3. magma that reaches earths surface and flows out the vent
- 4. the idea earths surface is broken into plates
- 5. a vibration that spreads out away from a focus when an earthquake happens
- 7. the central opening in a volcanic through which magma may flow
- 9. giant ocean waves formed when an earthquake occurs under the ocean floor
- 10. hot,molten rock,below earths surface
- 11. a sensitive device that detects the shaking of earths crust during a earthquake
- 12. the boundary where plates are moving past eachother
- 13. a cup like hollow that forms at the top of the volcano at the vent
- 17. a very hot of earths mantle,where magma can melt through a moving plate above it