Astronomy current events question: Europa plate tectonics

Astronomy 210L, fall 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!)

Preston Dyches, Dwayne Brown, and Michael Buckley, "Scientists Find Evidence of 'Diving' Tectonic Plates on Europa," (September 8, 2014)
http://www.jpl.nasa.gov/news/news.php?release=2014-300

By mapping _________ on Jupiter's moon, Europa, scientists proposed its ice experiences plate tectonics similar to that on Earth.
(A) missing surface features.
(B) active ice volcanoes.
(C) moonquake zones.
(D) subsurface ocean currents.
(E) glacier flows.

Correct answer: (A)

Student responses
Sections 70178, 70186
(A) : 12 students
(B) : 10 students
(C) : 5 students
(D) : 5 students
(E) : 11 students