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Astronomy Chapter Twelve

21 Questions  I  By Moonshark13
Astronomy Chapter Twelve

  
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1.  Why does a star grow larger after it exhausts its core hydrogen?
A.
B.
C.
D.
E.
2.  No stars are expected with masses greater than 150 times our Sun because
A.
B.
C.
D.
E.
3.  Which of the following statements about degeneracy pressure is not true?
A.
B.
C.
D.
4.  What is the range of star masses for high-mass stars?
A.
B.
C.
D.
E.
5.  What type of star is our Sun?
A.
B.
C.
6.  Which of the following sequences correctly describes the stages of life for a low-mass star?
A.
B.
C.
D.
E.
7.  What happens after a helium flash?
A.
B.
C.
D.
E.
8.  Which two energy sources can help a star maintain its internal thermal pressure?
A.
B.
C.
D.
E.
9.  Why is Supernova 1987A particularly important to astronomers?
A.
B.
C.
D.
E.
10.  What is the fate of an isolated brown dwarf?
A.
B.
C.
D.
E.
11.  After a supernova event, what is left behind?
A.
B.
C.
D.
E.
12.  What happens when a star exhausts its core hydrogen supply?
A.
B.
C.
D.
E.
13.  What is a planetary nebula?
A.
B.
C.
D.
E.
14.  What types of stars end their lives with supernovae?
A.
B.
C.
D.
E.
15.  What happens to the core of a star after a planetary nebula occurs?
A.
B.
C.
D.
E.
16.  The helium fusion process results in the production of
A.
B.
C.
D.
E.
17.  You discover a binary star system in which one member is a 15Msun main-sequence star and the other star is a 10Msun giant. Why should you be surprised, at least at first?
A.
B.
C.
D.
E.
18.  What is the CNO cycle?
A.
B.
C.
D.
E.
19.  What happens when the gravity of a massive star is able to overcome neutron degeneracy pressure?
A.
B.
C.
D.
E.
20.  What did Carl Sagan mean when he said that we are all "star stuff"?
A.
B.
C.
D.
E.
21.  How many helium nuclei fuse together when making carbon?
A.
B.
C.
D.
E.
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