Astronomy quiz question: supergiants

Astronomy 210 Quiz 6, fall semester 2013
Cuesta College, San Luis Obispo, CA

A __________ main-sequence star will become a supergiant.
(A) massive.
(B) medium-mass.
(C) low-mass.
(D) (Two of the above choices.)
(E) (All of the above choices.)
(F) (None of the above choices.)

Correct answer (highlight to unhide): (A)

A massive star will become a supergiant after exhausting all of the hydrogen in its core at the end of its main-sequence lifetime, before eventually exploding as a type II supernova, and its core will either become a neutron star or a black hole.

Section 70158
Exam code: quiz06SuRr
(A) : 32 students
(B) : 5 students
(C) : 0 students
(D) : 7 students
(E) : 2 students
(F) : 2 students

Success level: 68% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.37

Section 70160
Exam code: quiz06N3sT
(A) : 17 students
(B) : 2 students
(C) : 3 students
(D) : 3 students
(E) : 0 students
(F) : 1 student

Success level: 70% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.61