Snow becomes glacial ice through a process of ____
a. evaporation and precipitation
b. freezing and evaporation
c. precipitation and refreezing
d. melting and refreezing
d
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Which of the following cloud types is associated with tornado development?
A) cumulus B) nimbostratus C) altocumulus D) cumulonimbus
A copper concentration mill tends to locate near a copper mine because it is a
A) bulk-reducing industry. B) perishable industry. C) bulk-gaining industry. D) specialized manufacturer. E) fabrication concentration point.
This figure shows the depth of the troposphere over the Earth. Why is the troposphere deepest over the Equator? Select one:
a. Differences in heating b. Differences in land versus ocean c. Differences in longitude d. Differences in the tilt of Earth's axis e. Differences in cloudiness
A machine puts out 100 W of power for every 1000 W put into it. The efficiency of the machine is
A) 10 percent. B) 50 percent. C) 90 percent. D) 110 percent. E) none of the above