Across
- 5. core liquid layer of earths core
- 7. outer most layer of the earth
- 8. science of the history of the earth as recorded in rocks
- 11. what happens when two plates collide going up
- 12. old supercontinent, helped us prove continental drift
- 14. piece of lithosphere that moves on the lithosphere
- 15. incapable of or resistant to bending, very hard
- 16. subject to or caused by an earthquake or earth viberation
- 18. the theory that continents drift apart
- 20. softer layer of the mantle
Down
- 1. the regions of earth where most living organisms exist
- 2. atom with the same atomic number, different number of nuetrons
- 3. outer most rigid layer of the earth
- 4. movement of the edge of one tectonic plate under the other
- 6. molten rock in the earths crust
- 9. the largest unit of geologic time
- 10. relating to eruptions of gas and lava from the Earth's crust
- 13. a specialist on the history of earth in rocks
- 17. layer between the crust and core
- 19. core solid, dense center of earth