Across
- 4. Continents drifted into present location
- 6. Flat horizontal layers
- 10. A cup-like hollow that forms at top of volcano
- 11. A huge crack in the Earth's crust
- 16. The idea that Earth's surface is broken into plates that slide slowly along the mantle
- 17. The amount of energy from an earthquake
- 20. Earth's rocky surface
- 21. A wide, gently sloped volcano
- 23. A sensitive device that detects an earthquake
Down
- 1. The central opening of a volcano where magma escapes
- 2. The sliding of a denser ocean plate under another plate
- 3. A steep-sided volcano
- 5. The idea that new crust is forming spreading apart the Earth's crust
- 7. A very hot part where magma melts the plate
- 8. The layer beneath the Earth's crust
- 9. Heat from below the Earth's surface
- 12. Magma that has reached the Earth's surface
- 13. A vibration that comes from where the earthquake happens
- 14. The point directly above the focus of an earthquake
- 15. The exact point where an earthquake starts
- 18. Shaking of the Earth's crust after the main shaking of an earthquake
- 19. A cone shaped volcano
- 22. Hot molten rock beneath the Earth's surface