Radiation is made of discrete packets of energy called ____
A) thermals
B) convective cells
C) photons
D) microns
C
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Although we don't know for sure, changes in the strength and orientation of earth's magnetic field are most likely due to
A) fluctuations in outer-core convection. B) variations in sea-floor spreading rates. C) the total number of mantle hot spots. D) changes in the velocity of subducting plates.
Vapor pressure is defined as _________
A) the temperature at which the air becomes saturated B) the part of the total atmospheric pressure exerted by water vapor when the air is saturated C) the mass of water vapor in a unit of air compared to the remaining mass of dry air D) the part of the total atmospheric pressure exerted by water vapor E) the mass of water vapor in a given volume of air
Which region has the highest annual average wind speeds?
A) Washington and Oregon B) Utah, Arizona, and Nevada C) Florida and Georgia D) Kansas, Nebraska, and the Dakotas
The end product(s) of photosynthesis is(are) ________
A) carbon dioxide B) water C) carbohydrates D) light E) unknown