Katie's D1-3 Review

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