Across
- 2. The name of the earth's outer crust
- 7. The name of all the continents when they were one large supercontinent
- 9. Fractures in the earth crust formed by the movement of tectonic plates
- 11. The thickest layer of the earth.
- 13. The preserved remains of ancient animals. Alfred Wegener found these on different continents and used them to prove that the continents were once part of the same landmass
- 14. Earth's The outer shell could also be called ____
- 15. A land form that is created by tectonic plates converging or diverging resulting in magma rising to the surface
- 16. The boundary between two tectonic plates that move away from each other, creating land forms such as the Mariana Trench or volcanoes
- 19. The last name of the person who created the continental drift theory
- 20. Seismic activity caused by two tectonic plates moving causing the ground to shake
Down
- 1. A word that refers to the structure of the earth's crust
- 3. An area of the Earth's mantle where hot plumes rise, forming volcanoes on the crust
- 4. The boundary between two tectonic plates that collide into each other often creating mountains
- 5. A substance made of liquid rock beneath the earth's surface. Erupts from volcanoes
- 6. A land form that is created when two tectonic plates collide with each other and push rock up as a result
- 8. The name of the layer of molten rock the tectonic plates float on
- 10. The boundary between two tectonic plates that are sliding past each other in opposite directions. This movement often creates earthquakes
- 12. The name of the landmasses that Alfred Wegener believed once fit together to create once large landmass
- 17. A narrow, steep gap or crack underneath the ocean caused by the movement of tectonic plates
- 18. Large sheets of ice that form at the coldest places of the earth. Alfred Wegener used striations made by these large ice sheets to prove his theory of continental drift