Across
- 3. The layer of hot, solid material between earth's crust and core
- 8. Type of rock that makes up oceanic crust
- 9. The name of the supercontinent that broke apart 200 million years ago
- 10. Type of rock that makes up continental crust
- 15. Theory that states the continents move over time
- 16. A dense sphere of solid iron and nickel at the center of the earth
- 17. Scientist who studied the topography of the ocean floor
- 19. A type of boundary that occurs when two plate are moving away from eachother
- 20. A layer of molten iron and nickel that surrounds the inner core of the earth
- 21. The process by which molten material adds new oceanic crust to the ocean floor
- 22. Layer of the earth that is broken into tectonic plates
- 24. The layer of rock that forms earth's outer surface
- 25. A type of boundary that occurs when two plates are moving together
Down
- 1. Landform that is made when two plates push down from subduction
- 2. An old, light, and fluffy crust that is made from silicon
- 4. Meteoroligist who was clowned by scientists for his theory of plate tectonics
- 5. A type of boundary that occurs when two plates slip past each other
- 6. A molten mixture of rock forming substances, gasses, and water from the mantle
- 7. Vibrations that travel through earth carrying the energy released during an earthquake
- 11. The shaking that results from the movement of rock beneath Earth's surface
- 12. Semi-Molten layer in the upper mantle that the plates move on
- 13. Crust that is very dense and young and made up of basalt
- 14. Theory that says the earth is broken up into pieces called plate tectonics
- 18. An undersea mountain chain where new ocean floor is produced; a divergent plate boundary under the ocean
- 23. What occurs when one plate is being pushed under the other into the mantle