Across
- 3. giant supercontinent that existed millions of years ago
- 5. vibrations that travel through the Earth
- 7. the solid center of the Earth located beneath the outer core
- 8. a type of lava that forms underwater
- 12. American geologist and oceanographer
- 14. something has been heated until it becomes liquid
- 17. curved chain of volcanic islands
- 18. the thin, dense part of Earth’s crust that makes up the ocean floor
- 19. liquid layer of the Earth located between the mantle and the inner core
- 21. outermost layer of the Earth
- 22. large rigid piece of the Earths lithosphere
- 24. he discovered continental drift
- 25. one tectonic plate moves under another and sinks into the mantle
- 26. molten rock beneath the Earths surface
Down
- 1. a chain of volcanoes that forms on a continental plate near a subduction zone
- 2. thick layer of the Earth located between the crust and the core
- 4. Earths magnetic field flips
- 6. Earths layers classified by what theyre made of
- 9. dark colored fine grained volcanic rock
- 10. a type of plate boundary where two tectonic plates slide past each other horizontally
- 11. the shaking of the Earth’s surface caused by sudden movement of tectonic plates along faults
- 13. alfred weagner
- 15. uses sound waves underwater to find objects
- 16. Earths ancient magnetic field
- 20. Earths layers classified by how they behave physically
- 23. stiff or firm