Across
- 6. What is a place where very hot material erupts from below the earth's surface?
- 8. What is the area where tectonic plates are colliding called?
- 9. What is earth's outermost layer?
- 10. What is a huge wave in the ocean caused by an earthquake on the sea floor?
- 12. What is molten rock below earth's surface?
- 13. What is the center of the earth called?
- 14. What is the place below the ground where an earthquake starts called?
- 17. What is the rapid movement of the ground due to the movement of tectonic plates?
- 19. What is a deep channel in the ocean floor where crust is sinking downward?
- 20. What is the process of continents breaking up, subsiding and allowing in water from the sea?
Down
- 1. What are mountains formed by crust crumbling upward as tectonic plates collide?
- 2. What is a depression in the ocean floor called?
- 3. What is the crust that forms the ocean floor?
- 4. What is a tool that detects seismic waves from an earthquake?
- 5. What is the point on the earth's surface directly above the focus of an earthquake called?
- 7. What is it called when tectonic plates are moving apart from each other in opposite directions?
- 11. What is a layer of semi-solid rock in the lower mantle where the earth tectonic plates move?
- 15. What is it called when one tectonic plate moves underneath another during a collision?
- 16. What is molten rock that has erupted onto earth's surface?
- 18. What is a section of the earth that moves about on earth's surface?