Stars

6. stars form out of giant clouds of gas in space that are called
7. This is what happens when a star runs out of helium to use for fuel (a star explosion)
9. The fuel of a star
11. Hottest star labeled on the H-R diagram
13. Nuclear ______ is the process that takes place inside of stars that creates energy
14. A red giant star uses this as its fuel (since it already used up all of its hydrogen)
15. Another word for luminosity
16. Earth's Sun will eventually turn into a _____ _____ (two words)
18. The force that brings gas together to create stars

1. Only the largest stars produce these when they explode
2. The hottest stars are this color
3. as temperature increases luminosity _________
4. A small star burns its fuel slowly, so its life will be ____
5. Most stars fall into this category (about 90%)(two words)
8. What color is a star that is 8,000 K
10. the coolest stars are this color
12. brightest star labeled on the H-R diagram
17. When the sun runs out of hydrogen, it will expand and become a ___ ____ (two words)