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The Sun & Stars


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									The Sun & Stars Names____________
Absolutely Awesome Assignment
On the bottom of this paper is a list of questions, many of which we will find answers to
during our study of our Sun and other stars. Some of the answers to these questions may
be VERY difficult to find on the internet, but do your best! Many of these questions
come from previous students. The questions are grouped thematically so that the answers
to sequential questions in the list might be located on the same websites. Today you need
to browse the websites below to answer the questions.

Helpful Websites
http://www.windows.ucar.edu/tour/link=/sun/sun.html (Click on links from this page to
get more info)

1. What colors can stars be?

2. What does color indicate about stars?

3. Who were Ejnar Hertzsprung and Henry Russell, what did they do?

4. What is a reasonable size range for most stars?

5. What are the major elements in most stars?

6. What is the process of nuclear fusion?

7. What is a Main Sequence star?

8. How many stars are Main Sequence stars? (Percentage is okay)

9. Which stars are hotter: Red Giants or White Dwarfs?

10. What are Binary Stars?

11. What is a Constellation?
12. What is a Nebula?

13. What is a Supernova?

14. What is a Neutron Star?

15. What happened to the Crab Nebula in 1054?

16. What is the temperature at most places in the Universe?

17. When you look at a constellation the stars appear to be close together. Does this
mean these stars are actually close together? Why/why not?

18. How long do most stars "live"?

19. What factors contribute to how long a star lives, what kind of star has a shorter life?

20. What is one way that scientists measure how far away stars are?

21. How can scientists learn what elements make up far away stars?

22. How many stars are in the Milky Way Galaxy?

23. What is the shape of the Milky Way Galaxy?

24. What kind of star (major category) is Betelgeuse?

25. What is special about Proxima Centauri (you may also try Alpha Centauri, you can
consider these two to be the same for this assignment)?

26. How far away is Proxima/Alpha Centauri?

27. What are the major elements that make up our Sun?

28. What temperature is our Sun? (A range is probably appropriate here)

29. What are the major layers of our sun?

30. Which layer of the sun is the hottest?

31. Which layer of the sun is the LEAST dense layer?

32. How "old" is our sun?

33. How much longer will our sun continue to burn?
34. What are sunspots?

35. Which part of the sun ROTATES most quickly the "polar" region or the "equatorial

36. What is the sunspot cycle, how long does it last?

37. Are we near a sunspot cycle high or low right now?

38. What does heliocentric mean?

39. Is our Sun average or very different? (Size/Temperature/Color/Etc.)

40. What color is our Sun?

41. How far away is our sun? (miles, kilometers, and Astronomical Units)

42. How long does it take one photon of light to travel from the Sun to the Earth?

43. How large is our sun?

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