1. Stars and Galaxies Review

2. What type of Star:
What does a medium sized main sequence star become when fusion slows down?
A Red Giant

3. What type of Star:
What does a medium sized star become after all fusion stops?
A planetary nebula and then a white dwarf

4. What type of Star:
What is a small, medium, or large star called when it is fusing hydrogen into helium?
A main sequence star

5. What type of Star:
What is a large star called when fusion slows down and it begins to fuse heavier elements?
A red super giant

6. Which stars have the hottest but dimmest stars?
White Dwarfs

7. Which group of stars have the coolest but the brightest stars?
Red Super giants and Giants

8. Which group of stars does our Sun belong to?
Main Sequence Stars

9. Which group of stars has both the hottest and brightest and the coolest and dimmest stars?
Main Sequence Stars

10. What is the lightest element in the Universe?
Hydrogen

11. What is the main fuel for stars?
Hydrogen

12. When you fuse hydrogen together what is made?
Helium

13. What is made is you fuse two helium atoms together?
Beryllium

14. What is fusion?
Combining two lighter elements to make one new heavier element and release energy

15. What does the Law of Conservation of Mass state?
Matter is not created or destroyed in a chemical reaction

16. What do we mean when we say stars are element builders?
Stars are hot enough to support fusion
Through fusion two lighter elements become one new heavier element.
Through fusion stars can build heavier and heavier elements

17. What elements are fused during the main sequence?
Hydrogen into helium

18. What elements are fused during the red giant and red supergiant stage?
Helium up through Iron

19. How are elements heavier than Iron made?
Super novas