Astronomy 210 Quiz 7, spring semester 2012
Cuesta College, San Luis Obispo, CA
A type Ia supernova or type II supernova produced the:
(A) lithium in hybrid car batteries.
(B) hydrogen in Jupiter's atmosphere.
(C) iron in your blood.
(D) helium in the sun's core.
Correct answer: (C)
Heavy elements are typically produced in the last stages of a massive or medium-mass star's main-sequence lifetime, and these elements would then be scattered by a type II or type Ia supernova, respectively (assuming that the medium-mass star would have a close companion). Lithium was produced by nucleosynthesis in the first few minutes of the big bang, while hydrogen would be primordial remnants of the big bang, and helium in the sun's core would typically be produced by proton-proton cycle fusion.
Section 30674
Exam code: quiz07n4rS
(A) : 6 students
(B) : 8 students
(C) : 11 students
(D) : 5 students
"Success level": 42% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.11
Section 30676
Exam code: quiz07sPh3
(A) : 6 students
(B) : 11 students
(C) : 5 students
(D) : 9 students
"Success level": 22% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.23
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