Across
- 5. tectonic zone where plates move away from each other
- 8. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust
- 10. the study of earth
- 12. tectonic zone where oceanic plates sink below continental plates
Down
- 1. A current where molecules rise over a heat source and sink as they cool
- 2. become active and eject lava ash and gases
- 3. hot molten or semifluid rock erupted from a volcano
- 4. the outermost shell of a terrestrial planet
- 6. melted mass of geological materials
- 7. tectonic zone where plates moving toward each other
- 9. preserved remains of life from a past geological age
- 11. solid mass of geological materials