Science Vocabulary Review

3. a cloud of dust and gas where stars are born.
8. the fiery third layer of the sun that extends 10,000 to 25,000 km away from the surface of the sun.
9. a star in its first stages of its life.
14. where energy is converted into heat
15. the layer of the sun that we can see
17. stars that are in the middle stable part of their life
20. diagram that shows the relationship between surface temperature and luminosity.

1. a rapidly spinning neutron star that produces radio waves.
2. second layer of the sun's atmosphere
4. an object whose gravity is so strong that not even light can escape.
5. a loop of fire and gas
6. the small dense remains of a star after a supernova.
7. a device that breaks light into the colors of the spectrum.
10. where energy is radiated
11. the gigantic explosion of a dying star
12. how bright a star is
13. dark spot on the sun
16. the hot white core of a star that is left behind after the outer layers have expanded into space.
18. a sphere of hydrogen
19. where nuclear fusion occurs