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Astronomy quiz question: April 2014 total lunar eclipse moon visibility

Astronomy 210 Quiz 2, spring semester 2014
Cuesta College, San Luis Obispo, CA

In April 2014 observers in San Luis Obispo, CA will see a total lunar eclipse[*]. When observers in San Luis Obispo, CA[**] are watching this total lunar eclipse, at the same time observers in Paso Robles, CA will see:
(A) a total lunar eclipse.
(B) a partial lunar eclipse.
(C) a normal full moon.
(D) (None of the above choices, as the moon would not be visible.)

[*] http://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2014Apr15T.pdf.
[**] N.b.: San Luis Obispo, CA, and Paso Robles, CA are the locations of the main and satellite locations of Cuesta College in San Luis Obispo county.

Correct answer (highlight to unhide): (A)

For a total lunar eclipse, the moon is completely in the umbra of Earth. All observers on the night side of Earth (which would include both San Luis Obispo, CA and Paso Robles, CA, both located within the same county on the central California coast) will be able to see this total lunar eclipse at the same time.

Section 30674
Exam code: quiz02nF09
(A) : 25 students
(B) : 1 student
(C) : 0 students
(D) : 0 students

Success level: 96% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.14

Section 30676
Exam code: quiz02sCt8
(A) : 36 students
(B) : 6 students
(C) : 0 students
(D) : 1 student
(No responses: 1 student)

Success level: 83% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.38

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