Astronomy 210 Quiz 5, Spring Semester 2011
Cuesta College, San Luis Obispo, CA
__________ cause(s) the pink color of an emission nebula.
(A) Electrons moving to lower orbitals.
(B) Scattered light from stars.
(C) Light blocked by dense clouds of gas and dust.
(D) Supernovae shockwaves.
Correct answer: (A)
The lavender/pink color is the mixture of several visible light photons of different wavelengths, emitted when an electron jumps down several hydrogen orbitals.
Section 30676
Exam code: quiz05s0F7
(A) : 16 students
(B) : 6 students
(C) : 14 students
(D) : 3 students
"Success level": 47% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.85
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