Astronomy current events question: Kepler 7b cloud cover

Astronomy 210L, fall semester 2013
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!)

Jennifer Chu, "Scientists Generate First Map of Clouds on an Exoplanet," October 3, 2013
http://web.mit.edu/newsoffice/2013/scientists-generate-first-map-of-clouds-on-kepler-7b-1003.html

Observations of exoplanet Kepler 7b's __________ provides evidence that its atmosphere may be overcast on one side, while clear on the other side.
(A) moons.
(B) polar ice caps.
(C) hurricanes.
(D) reflectivity.
(E) rainfall.

Correct answer: (D)

Student responses
Sections 70178, 70186, 70200
(A) : 3 students
(B) : 3 students
(C) : 3 students
(D) : 47 students
(E) : 3 students