20160204

Astronomy quiz question: Lyra will rise from which horizon?

Astronomy 210 Quiz 1, spring semester 2016
Cuesta College, San Luis Obispo, CA

The diagram at right shows the positions on February 14 of the constellations Cygus, Cepheus and Lyra for an observer in San Luis Obispo, CA. Ignore daylight saving time. Assume you can see stars in daylight. After setting, the constellation Lyra will eventually rise on the __________ horizon.
(A) northeast.
(B) east.
(C) southeast.
(D) southwest.
(E) west.
(F) northwest.

Correct answer (highlight to unhide): (A)

As read off from a starwheel, Lyra will be just about to set on the northwest horizon at approximately 5:00 PM on February 14. Lyra will subsequently rise approximately 1:00 AM on February 15 from the northeast horizon.

Section 30674
Exam code: quiz01n0iR
(A) : 13 students
(B) : 4 students
(C) : 1 student
(D) : 1 student
(E) : 1 student
(F) : 1 student

Success level: 62% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.67

Section 30676
Exam code: quiz01sk4r
(A) : 34 students
(B) : 6 students
(C) : 3 students
(D) : 4 students
(E) : 1 student
(F) : 5 students

Success level: 65% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.53

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