1							2				3		4
													5
		6
7												8				9
						10
11
										12
														13
	14
																				15
16		17
								18
			19
20

Across 5. A layer of hot rock 7. The outer layer of Earth 10. When plates move apart from each other (2 Words) 11. The point or line where one region ends and another begins 14. When plates come together (2 Words) 17. A layer of molten metal surrounding the inner core (2 Words) 18. The soft layer in the mantle 20. When plates slip past each other (2 Words)

Down 1. A measure of how much mass there is in a given volume of a substance 2. Breaks in Earth's crust where rocks have slipped past each other 3. The hypothesis stating that all the continents were once together, and have since drifted apart (2 Words) 4. The transfer of energy that is carried in rays 6. The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle 8. This happens when mid-ocean ridges continually add new material to the ocean floor (2 Words) 9. Any trace of an organism that has been preserved in rock 12. A large landmass 13. A dense ball of solid hot metal (2 Words) 15. Heat transfer by the movement of a fluid 16. Heat transfer between materials that are touching 19. The super-continent made 300 million years ago