Which of the following statements about radiation is true?
A. Radiation has no beneficial health applications.
B. Radiation is new: It is a man-made phenomenon.
C. Radiation can be a useful tool. Like fire, it is only dangerous when misused.
D. all of the above
E. only A or B
Answer: C
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Higher amounts of water vapor are found near the Gulf of Mexico because [INSERT FIGURE 5-10B. INCLUDE CAPTION]
A) the Gulf's high water temperature promotes evaporation B) the Gulf's low water temperature promotes evaporation C) the Gulf's high water temperature promotes condensation D) the Gulf's low water temperature promotes evaporation
What is the tidal datum in reference to in regions with semidiurnal mixed tides?
A) Mean lower low water B) Mean low water C) Tidal range D) Mean tide
What is the principal drawback to the use of tar sands as an energy source?
A. Large volumes of natural gas are required for processing. B. It is not located near the surface and thus amenable to strip mining. C. No large deposits are present in North America. D. Processing may produce carbon dioxide.