Astronomy Chapter Eleven

19 Questions  I  By Moonshark13
Astronomy Chapter Eleven

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