Braden

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Across
  1. 2. the idea that new crust is forming at ridges in the sea floor
  2. 4. the idea that a supercontinent split apart into the continents
  3. 5. a steep sided cone that forms from explosive eruptions
  4. 7. heat from below earths surface
  5. 11. hot,molten rock below Earth's surface
  6. 13. the idea that Earth's surface is broken into plates that slide slowly across the mantle
  7. 14. a huge crack in earth's crust
  8. 17. magma that reaches the surface
  9. 18. shaking of earth's crust after a earthquake
  10. 20. the layer beneath Earth's crust
  11. 21. a sensitive device that detects the shaking of earths crust during an earthquake
  12. 22. a cuplike hollow that forms at the top of a volcano around the vent
  13. 23. the central opening in a volcanic area
Down
  1. 1. a very hot part of earth's surface
  2. 3. the idea that many kinds of rocks form flat, horizontal layers
  3. 6. a wide, gently sloped cont that forms from flows of lava
  4. 8. the sliding of a denser ocean plate under another plate when they collide
  5. 9. a cone formed from explosive eruptions
  6. 10. the amount of energy released by an earthquake
  7. 12. a vibration that spreads out away from a focus of an earthquake
  8. 15. Earths solid, rocky surface containing the continents and ocean floor
  9. 16. the point where an earthquake starts
  10. 19. the point on directly above the focus