The lowest possible temperature a body can approach is called
A. absolute zero.
B. "mighty" cold.
C. critical temperature.
D. triple absolute zero.
E. triple point.
Answer: A
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Find the equation 
that fits the following data.
A. 
B. 
C. 
D. 
A rock with a high porosity will most likely have a
A) low permeability. B) high permeability. C) large proportion of open pore spaces. D) low density.
In years of heavy snow pack in the mountains it is sometimes desirable to induce early melting of the snow, rather than wait until it all melts suddenly and causes floods
It has been suggested that a way to accomplish this might be to have planes fly over the snow fields and sprinkle them with black soot. What do you think of this idea? Would it work? A) Yes, it would probably work because the black surface would be a better absorber of sunlight than would the white snow. B) Yes, it would work because the soot would raise the melting point of the snow. C) Yes, it would work because the soot would decrease the specific heat capacity of the snow. D) No, it would not work because it is infrared radiation and not visible radiation which melts the snow. E) No, it would not work because sunlight has very little effect on how fast the snow melts.
Why does Earth have the strongest magnetic field among the terrestrial worlds?
A) It is the only one that has a metallic core. B) It rotates much faster than any other terrestrial world. C) It is the only one that has both a convecting core region and reasonably rapid rotation. D) It is by far the largest terrestrial world. E) It is the most volcanically active world.