The energy that is derived from the use of radioactive isotopes is termed as .
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A.
nuclear energy
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B.
solar energy
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C.
thermal energy
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D.
geothermal energy
Correct Answer:
A. nuclear energy
Explanation:
The energy produced by the decay of radioactive isotopes is known as nuclear energy. This process occurs when unstable atomic nuclei release excess energy in the form of radiation—such as alpha, beta, or gamma rays—to achieve a more stable state. In industrial applications, particularly within nuclear reactors, this energy is harnessed through controlled nuclear fission, where heavy isotopes like uranium-235 are split to generate significant amounts of heat and electricity. Unlike solar, thermal, or geothermal energy, which originate from the sun, molecular motion, or the Earth's internal heat respectively, nuclear energy is specifically derived from changes within the atomic nucleus.
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