Astronomy current events question: atom probe tomography of moon dust grain

Astronomy 210L, spring semester 2020
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!)

Natalie Dalea, "One Small Grain of Moon Dust, One Giant Leap for Lunar Studies" (February 4, 2020)
fieldmuseum.org/about/press/one-small-grain-moon-dust-one-giant-leap-lunar-studies

Atom probe tomography analyzed moon dust composition, using a __________ to release atoms one-by-one into a detector.
(A) laser.
(B) water jet.
(C) magnet.
(D) vacuum pump.
(E) spark generator.

Correct answer: (A)

Student responses
Sections 30679, 30680
(A) : 26 students
(B) : 1 student
(C) : 5 students
(D) : 3 students
(E) : 2 students