Across
- 5. study of the ocean
- 9. divided into three parts - core, mantle, and crust
- 10. rocky outer layer of earth
- 11. thick layer of earth located under crust
- 12. the innermost layer of earth
Down
- 1. study of atmosphere
- 2. study of the universe
- 3. study of earth
- 4. thin gaseous envelope in the air
- 6. all the water in the earth
- 7. all life on earth
- 8. destructive and constructive forces