Across
- 2. the earth was a ball of fire with no life
- 4. a type of rock made up of different fine minerals that were forced together by pressure
- 6. the first cells that could photosynthesize
- 7. the outer of the earth's makeup, this would be where all direct earth impacts occur
- 9. a type of rock that is formed by high heat and pressure
- 11. a type of rock that is made from melted minerals that cool into this rock
- 13. The process of slowly taking away materials reforming mountains and shaping the world
- 14. Rock that has been formed by a volcanic origin
- 17. a piece of history that has been preserved and petrified by immense pressure
- 19. the first life forums and the start of the tectonic plates
Down
- 1. the era that had the first multi-celled organisms
- 3. the makeup of sedimentary rock
- 5. a part of a rock that is cracked/ broken
- 8. it is that allows the earth's continents to move and change
- 9. when a rock is transforming into a liquid state
- 10. a continuous pressure on an object
- 12. rock that runs laterally in flat layers
- 15. the most central portion of the earth’s interior
- 16. the intermediate layer between the crust and the core
- 18. it is a mixture of many minerals that are all melted together into a liquid