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PHYSICS 137                     QUIZ #12                         December 7, 2005

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                1.  The outside temperature just before class began this morning was  22°F .

 ______   2.  The current local sky is (a) clear, (b) partly cloudy, (c) mostly cloudy, (d) overcast.

 ______   3.  The dominant local cloud type is (a) altostratus, (b) cirrus, (c) cumulus humilis, (d)
                     nimbostratus, (e) stratus.

 ______   4.  The current local air mass is (a) unstable, (b) conditionally unstable, (c) stable, (d) none of
                     the above.

 ______   5.  In water content per inch of snow, the snow that fell yesterday was (a) dryer than average,
                     (b) about average, (c) wetter than average.       

 ______   6.  Suppose that global warming induces a change in the environment which change then
                     produces global cooling.  Such a causal chain would be referred to by the term (a)
                     "Milankovitch theory," (b) "negative feedback," (c) "positive feedback," (d) radiative
                     forcing.

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