Astronomy current events question: Mercury's polar ice

Astronomy 210L, fall semester 2012
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!)
NASA press release, "MESSENGER Finds New Evidence for Water Ice at Mercury's Poles," November 29, 2012
NASA's MESSENGER spacecraft was able to confirm the presence of Mercury's __________ using three different types of measurements.
(A) warm molten core.
(B) plate tectonics.
(C) hydrocarbon lakes.
(D) polar water ice.
(E) dormant volcanoes.

Correct answer: (D)

Student responses
Sections 70178, 70186, 70200
(A) : 5 students
(B) : 1 student
(C) : 2 students
(D) : 20 students
(E) : 6 students

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