Energy from uranium harnessed for nuclear power:
Nuclear power is generated by the process of Fission. The nuclear energy is generated by splitting the atoms of uranium which creates a lot of heat which produces steam and the pressure from the steam is used by a turbine generator to create electricity.
This is how uranium is harnessed for nuclear power. The uranium fuel is arranged in such a manner that a fission chain reaction can take place the atoms can be broken down. The heat produced spins the turbine and the generator gains power.