Across
- 4. what event occurred 15 billion years ago
- 8. enclosed some seas are- isolated from other sections of ocean
- 9. what is it called when the stars blow up
- 11. tides Single moon provides for
- 12. some seas are enclosed lakes such as
- 14. out of the six major continental lands which is the first area
- 15. Hubble who discovered the redshift
- 17. What year did stanley miller experiment
- 18. what's the deepest color you can go to in the ocean
- 19. which ocean is the second and youngest ocean
- 20. ice covers what percent of earth's total surface
- 23. what percent of the ocean's surface is covered
- 26. the Indian ocean has the - trade route between Africa and Asia
- 27. some seas are
Down
- 1. theory a - theory is how stars and planets were formed
- 2. planets are formed through what
- 3. a cloud of cold dust and gas within a galaxy is called
- 5. stars,dust, and gas are held together by
- 6. north america includes u.s, mexico and
- 7. inner material concentrated into a - and outer material formed outer planets
- 8. which ocean covers one third of earth's surface
- 10. how do the stars shine
- 13. what is it called when iron sunk to the middle of the planet
- 14. which ocean is the smallest and includes water from north
- 16. gas massive spheres are called
- 17. in - the united nations established the boundaries of the ocean and continents
- 21. skater a solar nebula is like a
- 22. what percent of the land masses are covered
- 24. which planet is a typical
- 25. way the galaxy is spiraled by