Across
- 4. untested explanation
- 6. the study of the universe
- 8. study of the atmosphere
- 9. life-giving gaseous envelope
- 11. dynamic mass of water that is continually on the move, evaporating from the oceans to the atmosphere, precipitating to the land, and running back to the ocean again
- 13. lies beneath the atmosphere and the ocean
- 14. theory proposes that the bodies of our solar system evolved from any Normas rotating cloud called a solar nebula
- 16. dense inner sphere
Down
- 1. all life on earth
- 2. The light and very thin outer skin of earth
- 3. study of earth
- 5. time the span of time since the formation of earth
- 7. less dense sphere
- 10. all sciences in an interrelated study of the ocean
- 12. method the process in which scientists observe and formulate scientific hypotheses and theories
- 15. well-tested and widely accepted view that everyone agrees on