Plate Tectonics
Across
- 4. Molten rock stored beneath Earth's surface
- 7. The process that results when a dense oceanic plate sinks beneath a more buoyant plate
- 8. The type of rock that forms when lava crystallizes and cools
- 9. The thick middle layer of the Earth
- 12. The process by which new oceanic crust forms along a mid-ocean ridge and older crust moves away
- 14. The type of boundary between two plates that move toward each other
- 15. The circulation of particles within a material caused by differences in thermal energy and density
- 16. The dense metallic center of the Earth
- 18. The rigid outermost layer of the Earth that includes the upper mantle and crust
- 19. The type of boundary between two plates that slide past one another
Down
- 1. Name given to a supercontinent that began to break apart 200 million years ago
- 2. Magma that erupts onto Earth's surface
- 3. The process that occurs when one tectonic plate moves under another tectonic plate
- 5. The partially melted portion of the mantle below the lithosphere
- 6. the rigid slabs of rock that make up the Earth's surface
- 10. The movement of Earth's continents over time
- 11. Long, narrow mountain range on the ocean floor
- 13. The process that results when magma rises and pushes oceanic plates in two different directions
- 14. The brittle, rocky outer layer of Earth
- 17. The type of boundary between two plates that move away from each other