Plate Tectonics
Across
- 2. The age of the oldest continent
- 5. A plate boundary where to plates slide past each other
- 8. A big puff of hot mantle coming up from deep in the earth
- 10. Molten rock under the surface of the earth
- 12. She helped prove the theory of plate tectonics
- 13. Anything having to do with vibration in the earth’s crust
- 16. A period in history when glaciers covered most of the earth
- 17. A plate boundary where plates move away from each other
- 19. When the earth’s plates split apart from each other
- 20. Where the crust is being pulled apart to form a trench
Down
- 1. Part of the upper mantle that is solid but can flow
- 3. Another word for the crust of the earth
- 4. Alfred Wegener’s hypothesis
- 6. It uses sound to detect things on or under water
- 7. Movement in the mantle because of changes in temperature
- 9. The study of the bottom of bodies of water
- 11. An area that surrounds most of the Pacific Ocean where a lot of volcanoes erupt and earthquakes happen
- 14. A supercontinent
- 15. This volcano is located in Pompeii and erupted in 79 CE
- 18. The part of the earth’s surface right above the starting point of an earthquake