Astronomy current events question: revised age of the moon

Astronomy 210L, spring semester 2017
Cuesta College, San Luis Obispo, CA

Students are assigned to read online articles on current astronomy events, and take a short current events quiz during the first 10 minutes of lab. (This motivates students to show up promptly to lab, as the time cut-off for the quiz is strictly enforced!)
Stuart Wolpert, "The Moon is Older than Scientists Thought, UCLA-led Research Team Reports" (January 11, 2017)
The age of the moon has been revised to be older than previously thought, based on analysis of moon samples brought to Earth by:
(A) Apollo mission astronauts in 1970.
(B) the Chinese moon rover Yutu.
(C) Google Project X.
(D) lunar impact meteorites.
(E) the aurora borealis.

Correct answer: (A)

Student responses
Sections 30679, 30680
(A) : 23 students
(B) : 3 students
(C) : 3 students
(D) : 4 students
(E) : 0 students

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