Astronomy quiz question: B5 supergiant vs. M5 giant

Astronomy 210 Quiz 5, spring semester 2018
Cuesta College, San Luis Obispo, CA

A B5 supergiant has a ___________ than an M5 giant.
(A) brighter luminosity.
(B) larger size.
(C) hotter temperature.
(D) (Two of the above choices.)
(E) (All of the above choices.)
(F) (None of the above choices.)

Correct answer (highlight to unhide): (D)

An H-R diagram is provided with this quiz.


These stars are plotted on an H-R diagram below. While the B5 supergiant has a brighter luminosity and a hotter temperature, it has a smaller size than the M5 supergiant.


Section 30674
Exam code: quiz05NoPw
(A) : 0 students
(B) : 0 students
(C) : 1 student
(D) : 11 students
(E) : 8 students
(F) : 0 students

Success level: 62% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.31

Section 30676
Exam code: quiz05So1L
(A) : 1 student
(B) : 0 students
(C) : 10 students
(D) : 23 students
(E) : 8 students
(F) : 0 students

Success level: 57% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.55