Nuclear energy arises in a fission reactor by the splitting of nuclei of uranium or plutonium, there is no need for any energy source to start the process. You just set the chain reaction going by assembling enough fissile material with a moderator in the right geometrical arrangement, and away it goes.
Another answer:
The energy source is the weak nuclear force, from the nucleus of the atom. In other words, nuclear energy IS the energy source.
From the nuclear forces. An U-235 atom has a higher energy level than its daughter products; this is used in nuclear fission.
Nuclear power plants use nuclear energy as their source of power. They harness the energy released from nuclear reactions (such as fission) to generate electricity. The heat produced by these reactions is used to create steam, which drives turbines to generate electricity.
Nuclear energy is the energy source that heats fuel rods to create steam for electric generators in nuclear power plants. The heat produced by nuclear fission reactions inside the fuel rods is used to boil water and produce steam, which drives turbines connected to electric generators to produce electricity.
Most commonly used material to produce nuclear energy in Uranium.
URANIUM
Yes, radium is a radioactive element that can emit radiation and is used in some types of nuclear reactions to produce energy. It is not commonly used in nuclear power plants but has been used historically in early experiments to explore nuclear reactions.
Nuclear energy is not renewable. There is a fixed amount of potential fuel on the earth. Once it is used, there will be no more.
It is widely used but not as much as hydrocarbons and hydroelectric. Japan has extensive nuclear facilities, Europe has many.
We don't create it, We harness it, The uranium exceeds above 3000 degrees and explodes.
Uranium ore is the rock used to produce nuclear energy. It is extracted from the earth and processed to create fuel for nuclear reactors.
The nuclear fusion is not used now as a source of energy; probable possible in a far future.
Uranium is a highly reactive mineral that is used as a source of atomic energy for bombs and nuclear powered generating plants