Across
- 4. molten rock flows through a rift on the ocean floor
- 7. crust under the ocean
- 9. model explaining how plates make landforms
- 10. slow movement of Earth's plates
- 11. long row of sharp mountains
- 15. Section of Earth's crust
- 17. type of current within Earth's mantle
- 18. decayed plant and animal matter
- 19. so hot it becomes liquid
- 20. deep underwater valley
Down
- 1. outer part of earth consists of crust & mantle
- 2. layer of soil below the topsoil
- 3. solid layer of crust firmly attached to Earth
- 5. layer of Earth below the crust
- 6. bending upward of Earth's crust
- 8. crust that lies under land
- 12. layer of solid metal at the center of Earth
- 13. layer just below the mantle
- 14. a break in Earth's crust
- 16. the upper layer of soil