Cuesta College, San Luis Obispo, CA
A giant will be ___________ compared to a main-sequence star that has the same temperature.
(A) smaller and dimmer.
(B) smaller and brighter.
(C) larger and dimmer.
(D) larger and brighter.
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. The giant has a brighter luminosity and a larger size than the main-sequence star, in order for them to have the same temperature.
The entries for the "box method" of comparing relative Stefan-Boltzmann parameters are listed below.
| Lum. | = | size | × | Temp.4 | |
| giant | ↑ | ↑ | = | ||
| m.s. star | ↓ | ↓ | = |
Section 70158
Exam code: quiz05s3T1
(A) : 3 students
(B) : 1 student
(C) : 5 students
(D) : 31 students
Success level: 78% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.60
Section 70160
Exam code: quiz05ne7A
(A) : 0 students
(B) : 1 student
(C) : 8 students
(D) : 15 students
Success level: 63% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.57
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