Astronomy 210 Quiz 2, Spring Semester 2011
Cuesta College, San Luis Obispo, CA
What causes a lunar eclipse?
(A) The slow, gradual rotation of the moon about its own axis.
(B) Earth blocks light from the sun, casting a shadow on the moon.
(C) The moon blocks light from the sun, casting a shadow on Earth.
(D) Different amounts of the day and night sides of the moon as seen from Earth.
Correct answer: (B)
During a lunar eclipse, the moon is in Earth's shadow, on the opposite side of Earth than the sun.
Section 30676
(A) : 2 students
(B) : 32 students
(C) : 13 students
(D) : 0 students
"Success level": 70% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.38
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2 comments:
In the highly unlikely event that no one has already pointed this out, response (C) [instead of (B)] was listed as the correct response to the "What produces a lunar eclipse" question.
Yes--thanks for noticing that the answer was cut-and-pasted from the "What produces a solar eclipse" version of this same question. The correct answer is now posted.
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