Astronomy 210 Quiz 5, Fall Semester 2008
Cuesta College, San Luis Obispo, CA
[Version 1]
[4.0 points.] Which type of main-sequence star will eventually become a neutron star?
(A) Massive.
(B) Medium-mass.
(C) Low-mass.
(D) (None of the above choices.)
Section 70158
(A) : 34 students
(B) : 16 students
(C) : 8 students
(D) : 8 students
Correct answer: (A)
"Mass is destiny." Massive stars will become either neutron stars, or black holes; medium-mass stars will become white dwarfs, while low-mass stars become (and remain) red dwarfs, at least for now, given the current age of the universe.
"Difficulty level": 54%
Discrimination index (Aubrecht & Aubrecht, 1983): 0.95
[Version 2]
[4.0 points.] Which type of main-sequence star will eventually become a white dwarf?
(A) Massive.
(B) Medium-mass.
(C) Low-mass.
(D) (None of the above choices.)
Section 70160
(A) : 0 students
(B) : 20 students
(C) : 5 students
(D) : 5 students
Correct answer: (B)
"Difficulty level": 69%
Discrimination index (Aubrecht & Aubrecht, 1983): 0.42
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