Astronomy current events question: ice core sample history of solar storms

Astronomy 210L, spring 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!)

News release, "Researchers Uncover Additional Evidence for Massive Solar Storms" (March 11, 2019)
lunduniversity.lu.se/article/researchers-uncover-additional-evidence-for-massive-solar-storms

Analysis of __________ provide new evidence of massive solar storms that have impacted Earth over the past 1,500 years.
(A) lookback time.
(B) continental drift.
(C) ice core samples.
(D) magnetic pole flips.
(E) ancient cave paintings.

Correct answer: (C)

Student responses
Sections 30679, 30680
(A) : 6 students
(B) : 0 students
(C) : 30 students
(D) : 3 students
(E) : 0 students