1.  What do scientists do to get "fingerprints" of an element's color?
 
 

2.  What are three characteristics of stars that can be seen with a spectrometer?

    A.

    B.

    C.
 

3.  How do scientists know what elements a star is made of?
 
 

4.  Why do absorption lines happen on the sun's spectrum?
 
 

5.  When were stars first photographed?
 

6.  Where did Annie Cannon work and what was her job?
 

7.  How are stars organized?
 

8.  What is the average temperature inside a star?
 

9.  What is the difference between a Red Giant and a white dwarf?
 

10.  Why are Class G stars know as "solar stars?"
 

11.  Which classes of stars have calcium?
 

12.  Which class of stars are hottest?
 

13.  Which class of stars has iron?
 

14.  How can you calculate the luminosity of a star?
 

15.  Which class of stars is the coolest?
 

16.  How can you calculate the radius of a star?
 

17.  How would you find out the temperature and pressure of a star's atmosphere?
 

18.  Where can Red Giants be found on the H-R diagram?