20111016

Astronomy quiz question: parallax and star distances

Astronomy 210 Quiz 4, fall semester 2011
Cuesta College, San Luis Obispo, CA

The ___________ of a star can be deduced by observing parallax over a six-month interval.
(A) distance.
(B) size.
(C) temperature.
(D) mass.

Correct answer: (A).

Section 70158
Exam code: quiz04sIZ3
(A) : 20 students
(B) : 8 students
(C) : 6 students
(D) : 3 students

Success level: 58% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.58

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