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Unit 6 Section D Vocabulary
Nuclear Energy: Benefits and Burdens
7
Chemistry
10th Grade
07/20/2012

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Term
nuclear fission
Definition
splitting a nucleus into two smaller nuclei
Term
chain reaction
Definition
in nuclear fission, a reaction that is sustained because it produces enough neutrons to collide with and split additional fissionable nuclei
Term
critical mass
Definition
the minimum mass of fissionable material needed to sustain a nuclear chain reaction
Term
nuclear power plants
Definition
a facility where thermal energy generated by the controlled fission of nuclear fuel drives a steam turbine, producing electrical power; in other words, a facility that converts nuclear energy into electricity
Term
nuclear fusion
Definition
the combination of two nuclei to form a new, more massive nucleus
Term
high-level nuclear wastes
Definition
radioactive waste products associated with nuclear fission or products formed when neutrons are absorbed by nuclear fuel
Term
low-level nuclear wastes
Definition
radioactive waste products with relatively low levels of radioactivity, such as discarded protective clothing from nuclear laboratories
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