Across
- 3. a measure of how much mass there is in a given volume in a substance
- 5. A stack of fractured surfaces.
- 7. a mountain that forms in Earth's crust when molten material, or magma, reaches the surface.
- 8. When plates slip past each other.
- 11. a molten rock mixture.
- 13. Mountain ranges that ran along the middle of some ocean floors.
- 14. heat transfer by the movement of fluid.
- 16. A type of land form that is high in the sky.
- 18. a super continent that existed 200 million years ago.
- 19. When the ocean floor sinks and goes back into the mantle again.
- 20. When plates come together.
Down
- 1. Cracks in Earth's lithosphere.
- 2. Deep under water canyons.
- 4. New material from Mid-ocean ridges.
- 6. when magma reaches the surface.
- 9. energy that is carried in rays like light.
- 10. When plates move apart.
- 12. heat transfer between materials that are touching.
- 15. any trace of an ancient organism that has been preserved in rock.
- 17. Breaks in Earth's crust where rocks have slipped past each other.