Nuclear power plants in use today rely on ________
A) fusion reactions to create a flow of electrons to generate electricity
B) fusion reactions to directly generate electricity
C) fusion reactions to generate heat to boil water to generate electricity
D) fission reactions to generate heat to boil water to generate electricity
E) fission reactions to directly generate electricity
Answer: D
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If a power plant is 30 percent efficient, and the transmission system that delivers power to consumers is 60 percent efficient, then the overall efficiency is
A) 90 percent. B) 60 percent. C) 30 percent. D) 18 percent. E) none of the above
In societies where women receive less formal education and hold fewer legal rights than do men, they are generally expected to have a large number of children, and men regard it as a sign of their own virility
Indicate whether the statement is true or false.
Assuming the average value of the environmental lapse rate, what would be the temperature in the tropopause at a height of 3 km if the temperature at the surface is 20°C?
A) 9.2°C B) 32.9°C C) 0.5°C D) The answer cannot be calculated with the information given.
The boundaries of the Köppen system (as well as other climate classification systems) are
A) very abrupt corresponding to air mass interaction. B) determined by latitude and are, therefore, only estimates. C) determined by longitude and are, therefore, only estimates. D) transitions zones of gradual change. E) abrupt, but variable throughout the year, migrating with high and low pressure cells.