Across
- 6. , supercontinent
- 7. , the process in which the ocean floor adds new material continuously
- 8. , Heat transferred through objects that are touching
- 11. , a mountain that forms in the Earth's crust when molten material reaches the surface
- 13. , Heat transferred through fluids
- 15. , an ancient organism that has been preserved in rock
- 17. , measure of how much mass there is in a substance
- 18. , a major belt of volcanos
- 19. , plates coming together
- 21. , deep underwater canyons
Down
- 1. , plates sliping past each other
- 2. , Wegner's idea that the continents move slowly over the surface of the Earth
- 3. , magma when it comes up to the crust
- 4. , Energy transferred through light rays
- 5. , an area where material from deep within Earth's mantle rises through the crust and melts to make magma
- 9. , mountain ranges that run across the ocean floor
- 10. , the flow that transfers heat within a fluid
- 12. , break in Earth's crust where rocks have slipped past each other
- 14. , plates moving apart
- 16. , the process where the ocean floor sinks beneath a deep ocean trench and into the mantle
- 20. , a molten mixture of rock-forming substances in the mantle
