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Which radioisotope requires long-term storage as the method of disposal, to protect living things from radiation exposure over time?*
The ratio of the mass of U-238 to the mass of Pb-206 can be used to*
Which phrase describes a risk of using the radioisotope Co-60 in treating cancer?*
Dating once-living organisms is an example of a beneficial use of*
The use of uranium-238 to determine the age of a geological formation is a beneficial use of*
Which phrase describes a risk associated with producing energy in a nuclear power plant?*
Which radioisotope is used to determine the age of once-living organisms?*
Which radioisotope is used in dating geological formations?*
One beneficial use of radioisotopes is*
The dating of geological formations is an example of a beneficial use of*
Base your answers to questions 11 on the information below.
Nuclear fission has been used to produce electricity. However, nuclear fusion for electricity production is still under development. The notations of some nuclides used in nuclear reactions are shown in the table below.
State one potential benefit of using nuclear fusion instead of the current use of nuclear fission to produce electricity.*
Base your answers to questions 12 on the information below.
Nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. An external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.
Cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. One hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.
State one risk to human tissue associated with the use of radioisotopes to treat cancer.*