Nuclear energy is producednaturally and in man-madeoperations under human control : • Naturally: For example, the Sun and other stars make heat and light by nuclear reactions. • Man-Made: Machines called nuclear reactors, parts of nuclear power plants, provide electricity for many cities. Man-made nuclear reactions also occur in the explosion of atomic and hydrogen
1) small nucleiare combined to release energy.2)large nuclei are split to release energy.
Its Future• Some people think that nuclear energy is here to stay and we must learn to live with it.• others say that we should get rid of all nuclear weapons and power plants.• Both sides have their cases as there are disadvantages and advantages.
Nuclear power plantscould still produceelectricity after coal andoil become scarce.Nuclear power plantsneed less fuel than oneswhich burn fossil fuels.Well-operated nuclearpower plants do notrelease contaminants intothe environment.
The nations of the world now have more than enoughnuclear bombs to kill every person on Earth. The twomost powerful nations -- Russia and the United States –Illness can strike people years after their exposure tonuclear radiation.Nuclear reactors also have waste disposal problems. ofpeople.Nuclear reactors only last for about forty to fifty years.
NoteNuclear energy from Uranium is not renewable.Once weve dug up all the Earths uranium andused it, there isnt anymore.