Astronomy

4. The lower atmosphere, and what we see. Surface of the sun
6. Where energy from the core is transferred
8. Where nuclear fusion occurs; hottest part of the sun
9. 4 H turn into 1 He
12. Have immense density, strong magnetic fields, and rapid rotation
14. Packets of light that travel out from the core starting out as gamma rays
15. When nebula starts shrinking and spinning. Heat energy causes temps to increase

1. Star has tremendous explosion and blows itself apart
2. Almost a star, not enough mass for nuclear fusion
3. No more fusion occuring; dim hot dense core
5. Hot matter rises to the surface and then cools down sinks
7. How all stars start. Dense molecular clouds made up of hydrogen.
10. Massive stars become this. An object so massive and dense that light can't even escape
11. What small/medium stars turn into after main sequence stage
13. Dark regions on the suns surface that are cooler than the surrounding areas