Across
- 5. 1.85km is equal to
- 10. When the Earth was liquid rock, what element sank towards earths center
- 13. United States, Mexico, and Canada
- 16. second largest ocean
- 17. Lines of latitude
- 19. Was the moon closer of farther when the Earth was younger
- 20. The most common map used in classrooms
- 21. Smallest continent
- 22. Political boundary that separates North and South America
- 23. General shape of the earth
- 25. Place where the primary reference line passes through
- 26. Distance measured by marine and air navigators
- 27. The center of this ocean is ice that is 10 feet deep
- 28. When the earth first formed, what was the earth like
- 29. The type of water scientists look for in comets and in the oceans to see if there proportions match
Down
- 1. Younger than the earth by millions of years
- 2. Believed to have once had a magnetic field that disappeared when its core cooled
- 3. Color that can penetrate the ocean water the deepest
- 4. America Everything south of Panama
- 6. imaginary line running mostly along 180 degrees meridian
- 7. Lines of Longitude
- 8. Earth is born
- 9. How quickly is the earth every year?
- 11. Distorts the continents as little as possible
- 12. Its axis is tilted at 23 1/2 degrees
- 14. Earths iron core protects the earth from
- 15. Name of the Earth when the outer surface was completely molten
- 18. Largest ocean in the world
- 21. Surrounded by the Mediterranean Sea, Indian Ocean, and the Atlantic Ocean
- 24. The continent of the South Pole