Download Stellar Evolution

Stellar Evolution
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You must know the definition of all terms that are bold faced and underlined.
Reading Packet 5.1
1. What is stellar evolution ?
Reading Packet 5.2
2. Can we see stellar evolution taking place ?
Reading Packet 5.3
3. How does a star go from a nebula to a protostar ?
4. What is a T-Tauri star ?
5. What is hydrostatic equilibrium ?
Reading Packet 5.4
6. What affects the time it takes for a star to evolve ?
7. What is the difference in time that it takes for a protostar to become a main sequence star
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8. Discuss what happens to temperature and luminosity as a protostar contracts.
Reading Packet 5.5
9. Think of the evolution of stars like the lives of people
Baby
little kids
Teenagers
adults
10. What seperates a :
T tauri star from a Protostar
main sequence star from a T tauri star
11. Describe nuclear fusion (proton-proton chain)
12. Where does the energy come from in nuclear fusion ?
Stellar Evolution
13. Explain Einstein’s equation E= mc2 that shows the amount of energy produced.
Reading Packet 5.6
14. When does a star stop being a main sequence star ?
15. When will our sun stop being a main sequence star ?
16. Which stars on the main sequence die faster ? Why ?
17. What is the difference in how long a Blue Giant last compared to a Red Dwarf ?
Reading Packet 5.7
18. What does the core of a star at the end of being a main sequence star look like ?
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Stellar Evolution
19. What happens to these main sequence stars that causes them to expand to Red Giants ?
20. What happens to the mass of the star ? What happens to the density ?
21. What happens to the surface temperature of red giants ?
22. What happens to the luminosity of the red giant ?
23. What will happen to the Earth as our Sun becomes a red giant ?
Reading Packet 5.8
24. What is the triple alpha process ?
25. What is the Helium Flash ?
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Stellar Evolution
26. What elements can be formed inside of more massive red giants ?
Reading Packet 5.9
27. What are variable stars ?
28. What are Cepheid variables ?
Reading Packet 5.10
29. What marks the death of a star ?
30. What is the cut off for what happens to stars when they die ?
Reading Packet 5.11
31. How does a star go from a red giant to a planetary nebula ?
32. What are the features of a planetary nebula ?
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Stellar Evolution
Reading Packet 5.12
33. What is a white dwarf ?
34. Give some features of white dwarves
35. What is a nova ? (Type II Supernova)
Reading Packet 5.13
36. Describe the life cycle of a star the size of our Sun
Reading Packet 5.13
36. Describe the life cycle of a star that is 8 solar masses or greater
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Stellar Evolution
Reading Packet 5.14
37. What is a Type I supernova ?
38. When and where was the last supernova seen ?
Reading Packet 5.15
39. What elements are created from supernovas ?
40. What happens to this material from the supernova ?
Reading Packet 5.16
41. What are Neutron stars ?
42. What are pulsars ?
Reading Packet 5.17
43. What is a black hole ?
44. Describe Einstein’s theory on gravity
45. What is a singularty ?
46. What is an event horizon ?
47. What is in the center of the Milky Way ?
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