Across
- 1. The regions of Earth where living organisms exist
- 4. Science of the history of the Earth as recorded in rocks
- 7. Molten rock in the Earth's surface
- 10. The branch of geology studying the folding and faulting of the earth's crust
- 12. A geologist who uses physical principles to study the properties of the Earth
- 14. The phenomena associated with volcanic activity
- 16. The movement or study of the movement of earth's crust
- 17. Of or relating to or characteristics of the crust or moon
- 19. Having undergone transformation by pressure, heat, etc.
- 20. Movement of the edge of one tectonic plate under another
Down
- 2. Organisms interacting with their physical environment
- 3. Relating to or occurring or living in or frequenting open ocean
- 5. Crash together with violent impact
- 6. Use again after processing
- 8. A specialist in the history
- 9. The chemistry of the Earth's crust
- 11. A rigid layer of Erath's crust that is believed to drift slowly
- 13. The bottom of a sea or ocean
- 15. Subject to or caused by an earthquake or Erath vibration
- 18. A celestial body that revolves around the sun