Across
- 4. layer of the Earth below the tectonic plates; not primarily iron and nickel
- 5. preserved remains or preserved traces of long-dead organisms
- 6. technical term for a meat-eater
- 10. law that indicates which layers of rock were likely formed first
- 11. lava before it is exposed to the air
- 12. one of the three types of minerals
- 14. one of three types of rock
Down
- 1. type of rock that forms most precious stones (rubies, emeralds, sapphires, etc)
- 2. non-living substances that makes up the crust of the earth
- 3. "------ dating"; scientific process used to figure out a fossil's absolute age
- 7. translates to "terrible lizard"
- 8. the process of rock being broken down over time by wind or water
- 9. the remains of ancient decomposed plankton used for energy by modern humans
- 13. - one of three time periods of the dinosaurs; named after a mountain range