Astronomy current events question: Pan's equatorial ridge

Astronomy 210L, spring semester 2017
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!)
Tony Greicius, "Pan Revealed" (March 16, 2017)
The thin ridge around the equator of Saturn's moon, Pan, imaged by NASA's Cassini spacecraft may have been formed from material:
(A) gathered from Saturn's rings.
(B) flattened between two colliding smaller moons.
(C) flung out during rapid rotation.
(D) ejected from ice geysers.
(E) from moonquake faults.

Correct answer: (A)

Student responses
Sections 30679, 30680
(A) : 13 students
(B) : 4 students
(C) : 8 students
(D) : 3 students
(E) : 1 student

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