Astronomy current events question: planet Kepler 10b discovery

Astronomy 210L, Spring Semester 2011
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!)

Rachel Hoover and Trent J. Perrotto, "NASA'S Kepler Mission Discovers Its First Rocky Planet," January 10, 2011
http://www.nasa.gov/topics/universe/features/rocky_planet.html

The smallest known rocky planet was discovered by NASA's Kepler Mission space-based telescope observing this planet __________ its star.
(A) reflecting light from.
(B) gravitationally wobbling.
(C) crossing in front of.
(D) swallowed up by.
(E) slowly melted by.

Correct answer: (C)

Student responses
Sections 30678, 30679, 30680
(A) : 8 students
(B) : 3 students
(C) : 7 students
(D) : 0 students
(E) : 0 students