Final answer:
Nuclear energy was developed through the invention of the atomic bomb and it utilizes the process of nuclear fission to generate electricity in power plants.
Step-by-step explanation:
The energy source that was developed through the invention of the atomic bomb is nuclear energy. Nuclear energy is produced by the process of nuclear fission, where the nucleus of an atom is split into smaller parts, releasing a tremendous amount of energy. This process is utilized in both nuclear bombs and nuclear power plants, although the purposes and methods of controlling the reactions differ significantly. Unlike natural geothermal energy, which taps into the heat from the Earth's interior, nuclear energy relies on mining radioactive elements whose fission generates the heat necessary to make steam and drive a heat engine and generator to produce electricity.