Astronomy current events question: Mars' underground glaciers

Astronomy 210L, spring semester 2015
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!)
Nanna Bjørnholt Karlsson, "Mars Has Belts of Glaciers Consisting of Frozen Water" (April 7, 2015)
Researchers calculated the thickness of underground ice on Mars, based on NASA's Mars Reconnaissance Orbiter __________ measurements.
(A) temperature.
(B) gas composition.
(C) radar.
(D) infrared image.
(E) drill sampling.

Correct answer: (C)

Student responses
Sections 30678, 30679, 30680
(A) : 7 students
(B) : 4 students
(C) : 26 students
(D) : 12 students
(E) : 4 students

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