Astronomy current events question: Ceres' surface composition

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!)
Nicholas A. Veronico and Kassandra Bell, "Don't Judge an Asteroid by its Cover: Mid-infrared Data from SOFIA Shows Ceres' True Composition" (January 19, 2017)
Data from NASA's Stratospheric Observatory for Infrared Astronomy indicate that the surface of dwarf planet Ceres may be covered with:
(A) liquid hydrocarbon oceans.
(B) recent volcanic flows.
(C) rocky asteroid fragments.
(D) valuable rare-earth elements.
(E) water and methane ice.

Correct answer: (C)

Student responses
Sections 30679, 30680
(A) : 3 students
(B) : 3 students
(C) : 20 students
(D) : 0 students
(E) : 3 students

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