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Astronomy current events question: recent impact on Jupiter

Astronomy 210L, Fall Semester 2009
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!)
The Editors of Sky & Telescope, "The Impact on Jupiter!" July 20, 2009
http://www.skyandtelescope.com/news/51237952.html
How was the recent impact on Jupiter first discovered by an Australian astronomer?
(A) A cloud of dust surrounding Jupiter.
(B) A new dark spot on Jupiter.
(C) A shift in Jupiter's orbital position.
(D) A bright flash from the collision event.
(E) Radioactivity emitted from Jupiter.

Correct answer: (B).

Student responses
Sections 70178, 71086, 70200
(A) : 5 students
(B) : 53 students
(C) : 5 students
(D) : 0 students
(E) : 2 students

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