In nuclear power plants in the United States, near-pure water functions as
A) a moderator, heating up as it slows down neutrons, which triggers additional fission reactions.
B) a moderator, cooling down as it slows down neutrons that could cause fusion reactions.
C) an inhibitor, preventing neutrons from heating up and causing fusion reactions.
D) an inhibitor, preventing neutrons from cooling down and stopping the fission reactions.
A
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Protons, neutrons, and electrons are all
a. forms of energy b. equal in mass c. subatomic particles d. negative ions e. charged particles
In the anticyclone pictured here, the winds at area B are from the ________ bringing ________ temperatures.
A) north; warmer
B) south; warmer
C) north; cooler
D) south; cooler
The geothermal gradient represents a decrease in interior temperature with decreasing distance from the surface
Indicate whether this statement is true or false.
The Great Migration significantly expanded cities north of the ________
A) Mississippi River B) Mason Dixon Line C) Great Lakes D) Ohio River