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Astronomy Chapter Twelve

21 Questions  I  By Moonshark13
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1.  After a supernova event, what is left behind?
A.
B.
C.
D.
E.
2.  How many helium nuclei fuse together when making carbon?
A.
B.
C.
D.
E.
3.  What happens when the gravity of a massive star is able to overcome neutron degeneracy pressure?
A.
B.
C.
D.
E.
4.  Why does a star grow larger after it exhausts its core hydrogen?
A.
B.
C.
D.
E.
5.  The helium fusion process results in the production of
A.
B.
C.
D.
E.
6.  Which of the following statements about degeneracy pressure is not true?
A.
B.
C.
D.
7.  What type of star is our Sun?
A.
B.
C.
8.  What is the CNO cycle?
A.
B.
C.
D.
E.
9.  What is a planetary nebula?
A.
B.
C.
D.
E.
10.  What is the range of star masses for high-mass stars?
A.
B.
C.
D.
E.
11.  What is the fate of an isolated brown dwarf?
A.
B.
C.
D.
E.
12.  What happens after a helium flash?
A.
B.
C.
D.
E.
13.  Why is Supernova 1987A particularly important to astronomers?
A.
B.
C.
D.
E.
14.  Which two energy sources can help a star maintain its internal thermal pressure?
A.
B.
C.
D.
E.
15.  What did Carl Sagan mean when he said that we are all "star stuff"?
A.
B.
C.
D.
E.
16.  Which of the following sequences correctly describes the stages of life for a low-mass star?
A.
B.
C.
D.
E.
17.  No stars are expected with masses greater than 150 times our Sun because
A.
B.
C.
D.
E.
18.  What types of stars end their lives with supernovae?
A.
B.
C.
D.
E.
19.  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.
20.  What happens when a star exhausts its core hydrogen supply?
A.
B.
C.
D.
E.
21.  What happens to the core of a star after a planetary nebula occurs?
A.
B.
C.
D.
E.
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