One hundred units of coal energy are converted to electricity, which is then used to power an incandescent light bulb that produces 1.2 units of light energy. This results in a 1.2% ________

A) consumption
B) energy end-use efficiency
C) energy conversion efficiency
D) energy return on investment
E) energy conversion


B

Environmental & Atmospheric Sciences

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Principal atmospheric lifting mechanism(s):

Environmental & Atmospheric Sciences

The number of electrons delivered daily to an average American home by an average power utility in the mid-1980s was

A) zero. B) 110. C) 220. D) billions of billions. E) none of the above

Environmental & Atmospheric Sciences

What is the largest category of exports from Canada to the United States?

A) automobiles and automobile parts B) energy resources C) iron ore D) forest products E) computer hardware

Environmental & Atmospheric Sciences

Isotopes of oxygen, which differ in mass, are used to evaluate ______ in environmental science research.

A. climate history B. the age of organic remains C. the radioactivity of nuclear energy

Environmental & Atmospheric Sciences