20110307

Astronomy quiz question: atmosphere opacity

Astronomy 210 Quiz 3, Spring Semester 2011
Cuesta College, San Luis Obispo, CA

(Electromagnetic spectrum provided on Quiz 3, with transparency of Earth's atmosphere indicated for different forms of light. Downward lengths of gray bars indicates amount transmitted through atmosphere.)


Where would a telescope not be able to detect near infrared light?
(A) In outer space.
(B) On top of high mountains.
(C) At sea level.
(D) (More than one of the above choices.)
(E) (None of the above choices.)

Correct answer: (C)

Due to the opacity of the atmosphere, near infrared cannot be detected at sea level, but can be detected at higher elevations.

Section 30674
(A) : 2 students
(B) : 1 student
(C) : 33 students
(D) : 3 students
(E) : 3 students

"Success level": 80% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.55
Exam code: quiz03n7uu

Section 30676
(A) : 3 students
(B) : 1 student
(C) : 34 students
(D) : 5 students
(E) : 2 students
(No response) : 1 student

"Success level": 76% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.67
Exam code: quiz03s3ts

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