Astronomy current events question: asteroid 6478 Gault color change

Astronomy 210L, fall semester 2019
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!)
Jennifer Chu, "For First Time, Astronomers Catch Asteroid in the Act of Changing Color" (August 29, 2019)
The asteroid 6478 Gault is changing color as surface dust is lost due to:
(A) internal heat.
(B) cryovolcanoes.
(C) internal asteroidquakes.
(D) increasing rotation rate.
(E) collisions with micrometeorites.

Correct answer: (D)

Student responses
Sections 70178, 70186
(A) : 13 students
(B) : 1 student
(C) : 0 students
(D) : 19 students
(E) : 4 students

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