Cuesta College, San Luis Obispo, CA
[Version 1]Consider the view of the northern horizon shown below, as seen by an observer on February 2 in San Luis Obispo, CA. Ignore daylight saving time. Assume you can see stars in daylight. What time is this?
(A) 5:00 AM.
(B) 10:00 AM.
(C) 12:00 PM.
(D) 9:00 PM.
Correct answer: (B)
Response (A) has Cassiopeia at its lowest point in the sky on February 2; response (C) corresponds to the sky on January 1; and response (D) has Cassiopeia to the left (west) of Polaris on February 2.
Section 30676
Exam code: quiz01sH0p
(A) : 1 student
(B) : 39 students
(C) : 2 students
(D) : 6 students
Success level: 83% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.46
[Version 2]Consider the view of the northern horizon shown below, as seen by an observer on February 2 in San Luis Obispo, CA. Ignore daylight saving time. Assume you can see stars in daylight. What time is this?
(A) 10:00 AM.
(B) 12:00 PM.
(C) 2:00 PM.
(D) 9:00 PM.
Correct answer: (A)
Response (B) corresponds to the sky on January 1; response (C) has Ursa Major at its lowest point in the sky on February 2; and response (D) has Ursa Major to the right (east) of Polaris on February 2.
Section 30674
Exam code: quiz01n3Wb
(A) : 27 students
(B) : 1 student
(C) : 0 students
(D) : 4 students
(No response : 1 student)
Success level: 79% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.22
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