Cuesta College, San Luis Obispo, CA
Shown at right is a scene from an animated TV show. Discuss a specific plausible time (or range of times) for this scene, assuming that it is not an eclipse, using a diagram showing the positions of the sun, moon, Earth, and an observer on Earth. (Image credit: Matt Groening, Futurama, "Rebirth," Season 6, Episode 1, 20th Century Fox Television, 2010, http://www.gotfuturama.com/Multimedia/FrameGrabs/6ACV01/.)
Solution and grading rubric:
- p = 20/20:
Correct. Phase as shown is waning crescent, which is highest overhead at 9 AM (rises at 3 AM, and sets at 3 PM, so any time within that range would be plausible, may restrict times to between 3 AM to 6 PM as the sky is still dark, and moon is not yet fully upright/on the meridian). Correct diagram and reasoning. - r = 16/20:
Nearly correct (explanation weak, unclear or only nearly complete); includes extraneous/tangential information; or has minor errors. - t = 12/20:
Contains right ideas, but discussion is unclear/incomplete or contains major errors. Problems with either diagram, phase, or time. - v = 8/20:
Limited relevant discussion of supporting evidence of at least some merit, but in an inconsistent or unclear manner. Problems with diagram, phase, and time. - x = 4/20:
Implementation/application of ideas, but credit given for effort rather than merit. Explanation based on eclipses, solstices, etc. - y = 2/20:
Irrelevant discussion/effectively blank. - z = 0/20:
Blank.
Section 30676
Exam code: midterm01sl7k
p: 22 students
r: 4 students
t: 8 students
v: 13 students
x: 2 students
y: 0 students
z: 0 students
A sample "p" response (from student 4351):
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