Astronomy current events question: locating asteroid 2014 AA impact

Astronomy 210L, spring semester 2014
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!)

D. C. Agle, "First 2014 Asteroid Discovered: Update," January 2, 2014
http://www.nasa.gov/jpl/asteroid/first-2014-asteroid-20140102/

Earlier this year, the impact of asteroid 2014 AA was pinpointed off the coast of Venezuela using __________ detectors.
(A) GPS.
(B) tidal wave.
(C) solar flare.
(D) nuclear explosion.
(E) air traffic.

Correct answer: (D)

Student responses
Sections 30678, 30679, 30680
(A) : 8 students
(B) : 11 students
(C) : 6 students
(D) : 11 students
(E) : 16 students