Astronomy current events question: Kuiper belt object colors

Astronomy 210L, Fall Semester 2010
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!)
Astronomy.com editors, "Kuiper Belt of Many Colors," November 1, 2010
Scientists from NASA's Goddard Space Flight Center have proposed that the many different colors of Kuiper belt objects may come from:
(A) different layers exposed by the sun.
(B) tidal heating.
(C) sulfur-rich volcanoes and geysers.
(D) radioactive decays.
(E) simple organisms similar to algae or lichen.

Correct answer: (A)

Student responses
Sections 70178, 70186, 70200
(A) : 32 students
(B) : 3 students
(C) : 1 student
(D) : 3 students
(E) : 5 students

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