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Astronomy Chapter Eleven

19 Questions  I  By Moonshark13
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1.  Which of the following terms is given to a pair of stars that appear to change positions in the sky, indicating that they are orbiting one another?
A.
B.
C.
D.
E.
2.  Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ?
A.
B.
C.
D.
E.
3.  If the distance between us and a star is doubled, with everything else remaining the same,the luminosity
A.
B.
C.
D.
E.
4.  A star's luminosity is the
A.
B.
C.
D.
E.
5.  On a Hertzsprung-Russell diagram, where would we find stars that have the largest radii?
A.
B.
C.
D.
6.  Which of the following luminosity classes refers to stars on the main sequence?
A.
B.
C.
D.
E.
7.  Cluster ages can be determined from
A.
B.
C.
D.
E.
8.  Which of the following correctly states the luminosity-distance formula?
A.
B.
C.
D.
9.  On a Hertzsprung-Russell diagram, where would we find stars that are cool and luminous?
A.
B.
C.
D.
10.  The spectral sequence in order of decreasing temperature is
A.
B.
C.
D.
E.
11.  Which of the following best describes the axes of a Hertzsprung-Russell (H-R) diagram?
A.
B.
C.
D.
E.
12.  On a Hertzsprung-Russell diagram, where would we find white dwarfs?
A.
B.
C.
D.
13.  What are the standard units for luminosity?
A.
B.
C.
D.
E.
14.  Which of the following statements about an open cluster is true?
A.
B.
C.
D.
E.
15.  Which of the following is true about low-mass stars compared to high-mass stars?
A.
B.
C.
D.
E.
16.  On a Hertzsprung-Russell diagram, where would we find stars that are cool and dim?
A.
B.
C.
D.
17.  Suppose you measure the parallax angle for a particular star to be 0.1 arcsecond. Thedistance to this star is
A.
B.
C.
D.
E.
18.  The spectral sequence sorts stars according to
A.
B.
C.
D.
E.
19.  On a Hertzsprung-Russell diagram, where would we find red giant stars?
A.
B.
C.
D.
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