Across
- 4. describes how the solar system formed
- 6. ___ observation is one way we figured out the solar nebula theory
- 8. material being reused from star to star
- 10. where heavy elements come from--the __ of dead stars
Down
- 1. formed from leftover material in solar nebula
- 2. example of light element
- 3. the main force causing the nebula to collapse
- 5. how the nebula sped up as it rotated when material fell the the middle
- 7. Carbon is a(n) __ element
- 9. gas cloud in space or a stellar nursery