Astronomy quiz question: Earth's revolution

Astronomy 210 Quiz 1, fall semester 2011
Cuesta College, San Luis Obispo, CA

Earth undergoes one complete revolution in approximately:
(A) an hour.
(B) 12 hours.
(C) 24 hours.
(D) one month.
(E) one year.
(F) 26,000 years.

Correct answer: (E)

Section 70158
Exam code: quiz01S4lL
(A) : 0 students
(B) : 1 student
(C) : 10 students
(D) : 2 students
(E) : 21 students
(F) : 4 students
(Blank: 1 student)

"Success level": 57% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.81

Section 70160
Exam code: quiz01n8tE
(A) : 0 students
(B) : 0 students
(C) : 7 students
(D) : 0 students
(E) : 23 students
(F) : 0 students

"Success level": 79% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.63