Across
- 1. What are scientists able to calculate from the radioactive elements found in a meteorite that decay at a particular rate
- 6. What is the smallest of the continents
- 7. What color can penetrate the Ocean waters the deepest?
- 9. What is the largest ocean on earth
- 10. Our galaxy is the spiraled what?
- 11. what had a beginning
- 13. Lines of Latitude are also known as?
- 14. what is the continent bordered to the north by the Mediterranean Sea?
- 16. how stars and planets were formed
- 18. What is the continent at the South Pole?
Down
- 2. Huge rotating aggregations of stars, dust, and gas held together by
- 3. stars are formed in a what?
- 4. Big Bang Theory occured?
- 5. What planet is believed to have once had a magnetic field that disappeared when the planets iron core cooled?
- 7. what object was used to chart the direction of surface currents
- 8. A massive sphere is created by?
- 12. What is the primary reference line of latitude
- 15. Giant the body of star swells into a what?
- 17. What is the smallest ocean on earth