Plate Tectonics Crosswords

4. The theory that the continents were joined together in one large continent 225 million years ago.
7. The area below the lithosfere. It's more 'plastic' than the lithosphere, so it's easier to bend and move.
8. The energy is transferred when convection current contacts the ______.
14. A mountain range running the length of the Atlantic Ocean.
15. One of the two types of crust.
16. American geologist who used sonar scans to support Wegener's idea of continental drift.
17. One of the two types of crust.
18. The Theory of Continental ________.
19. Paleontologists noticed that these were the same on different continents even though the continents were separated by oceans.

1. Stays around the core and rises to the crust when it gains enough thermal energy.
2. The process where the magma around the core gains the thermal energy, rises to the crust, and pushes on the crust before cooling and sinking back down.
3. The layer of the Earth below the crust.
5. Scientist who first proposed the theory that the continents drifted.
6. The outermost solid portion of the planet Earth.
9. Alfred Wegener noticed that the coast of South America fit into the coast of this continent, just like a jigsaw puzzle.
10. The layer where the tectonic activity occurs.
11. Source of heat in the mantle.
12. The Earth's _________ field is created in the outer core.
13. Plate ________.