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Across 5. What is the Earth's crust made out of? (2 words) 6. As the fluid looses energy, and increases in density it begins to _______ 8. The study of earthquakes 9. Which cycle causes the ocean floor to move like conveyor belts, drifting the continents? (3 words) 10. The crust is divided into _______ _______ that move around on top of the mantle (2 words) 13. Evidence of Pangaea (one of four) 16. Evidence of Pangaea (one of four) (2 words) 17. The transfer of heat energy through the movement of currents in fluid and gasses 19. When two plates slide past each other (2 words) 20. What is the well known name for the super continent?

Down 1. What is a well known mountain range that is an example of? (The convergent boundaries; continental/continental) 2. Scientists believe it to be mostly iron due to the Earth's magnetic field 3. From what mountain range makes islands? (3 words) 4. When two tectonic plates move apart (2 words) 7. Evidence of Pangaea (one of four) 11. What is the study of the Earth's structure and the process that affects those structures? 12. Evidence of Pangaea (one of four) 14. Which cycle causes the ocean floor to sink beneath a deep ocean trench and back into the mantle? 15. Who was the scientist that came up with continental drift? (last name) 18. What's the unseen layer (in the Earth) between the crust and the mantle?