Astronomy current events question: evidence of lunar water

Astronomy 210L, Fall Semester 2009
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!)

Astronomy.com editors, "Deep Impact and Other Spacecraft Find Clear Evidence of Water on Moon," September 24, 2009
http://www.astronomy.com/asy/default.aspx?c=a&id=8661

According to a University of Maryland researcher, what may be the source of surface water on the Moon detected by both the NASA Deep Impact mission and the India Chandrayaan-1 spacecraft? Circle your answer below.
(A) Solar wind reacting with Moon rocks.
(B) The large impact that originally formed the Moon.
(C) Contamination from the Apollo 11 mission.
(D) Russian rocket boosters.
(E) Water-bearing asteroids.

Correct answer: (A)

Student responses
Sections 70178, 70186, 70200
(A) : 24 students
(B) : 6 students
(C) : 3 students
(D) : 0 students
(E) : 13 students