Across
- 2. ice, water and more moved
- 3. cut between magma
- 5. pressed between layers of mud
- 8. crack in rocks crust
- 10. heat pressed together to make rocks
- 11. trapped in rock
- 12. Younger on bottom, older on top
- 14. Times like Paleozoic Era
- 15. similar structure
- 16. what most types of rocks are
- 18. To see when a rock layer has formed
- 19. sand or mud hardens in mold
- 20. traces left behind like footprints
Down
- 1. high concentration of ash
- 4. determining the actual age for something
- 6. not similar structure
- 7. when species change over time
- 9. cylinder of ice to see the climate
- 11. minerals soak into buried remains
- 13. processes that shape the Earth continue
- 17. fancy word for biological classification