Across
- 2. inner two layers of earth
- 4. molten rock underground
- 8. layer between the crust and mantle
- 9. boundary where plates come together
- 10. crust and outermost mantle
- 11. evidence of past life
- 13. living layer of the earth
Down
- 1. boundary where two layers move apart
- 3. thickest layer of the earth
- 5. gases that surround the earth
- 6. idea that all landform changes are abrupt
- 7. the study of the physical and historical earth
- 12. outermost layer of the earth
- 14. liquid layer of earth