Astronomy 210 Quiz 2, fall semester 2013
Cuesta College, San Luis Obispo, CA
In April 2014 observers in San Luis Obispo, CA will see a total lunar eclipse[*]. During the total lunar eclipse, the moon is in its __________ phase, and is located in Earth's __________.
(A) full; umbra.
(B) full; penumbra.
(C) new; umbra.
(D) new; penumbra.
[*] http://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2014Apr15T.pdf.
Correct answer (highlight to unhide): (A)
During a total lunar eclipse, the moon is in its full phase, and is directly behind Earth (as seen from the sun), such that it is completely in Earth's umbra shadow zone.
Section 70158
Exam code: quiz02sNi7
(A) : 34 students
(B) : 4 students
(C) : 8 students
(D) : 0 students
Success level: 74% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.54
Section 70160
Exam code: quiz02nf0X
(A) : 19 students
(B) : 4 students
(C) : 5 students
(D) : 0 students
Success level: 68% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.13
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