...es uranium as a fuel. Uranium is an element that is dug out of the ground many places around the orld. It is processed into tiny pellets that are loaded into very long rods that are put into the poer plants reactor. Inside the reactor of an atomic poer plant, uranium atoms are split apart in a controlled chain reaction. In a chain reaction, particles released by the splitting of the atom go off and strike other uranium atoms splitting those. Those particles given off split still other atoms in a chain reaction. In nuclear poer plants, control rods are used to keep the splitting regulated so it doesnt go too fast. If the reaction is not controlled, you could have an atomic bomb. But in atomic bombs, almost pure pieces of the element Uranium-235 or Plutonium, of a precise mass and shape, must be brought together and held together, ith great force. These conditions are not present in a nuclear reactor. The reaction also creates radioactive material. This material could hurt people if released, so it is kept in a solid form. The very strong concrete dome in the picture is designed to keep this material inside if an accident happens. This chain reaction gives off heat energy. This heat energy is used to boil ater in the core of the reactor. So, instead of burning a fuel, nuclear poer plants use the chain reaction of atoms splitting to change the energy of atoms into heat energy. This ater from around the nuclear core is sent to another section of the poer plant. Here it heats another set of pipes filled ith ater to make steam. The steam in this second set of pipes poers a turbine to generate electricity. Learn more about nuclear fission by visiting other eb sites Nuclear FusionAnother form of nuclear energy is called fusion. Fusion means joining smaller nuclei the plural of nucleus to make a larger nucleus. The sun uses nuclear fusion of hydrogen atoms into helium atoms. This gives off heat and light and other radiation. In the picture to the right, to types of hydrogen atoms, deuterium and tritium, combine to make a helium atom and an extra particle called a neutron. Also given off in this fusion reaction is energy! Thanks to the University of California, Berkeley for the picture. Scientists have been orking on controlling nuclear fusion for a long time, trying to make a fusion reactor to produce electricity. But they have been having trouble learning ho to control the reaction in a contained space. hats better about nuclear fusion is that it creates less radioactive material than fission, and its supply of fuel can last longer than the sun. Heres hat e Learned1.Nuclear fission means splitting an atom apart. 2.Splitting an atom releases heat and light energy. 3.In a nuclear poer plant, an atomic chain reaction is controlled to produce heat to boil ater. That ater boils ater in pipes to make steam to turn a turbine and a generator to make electricity. 4.Nuclear fusion means combines atomic nuclei to make a larger nucleus. 5.The sun uses nuclear fusion of hydrogen into helium to make light and heat energy. 6.Scientists are trying to create nuclear fusion to make a cleaner source of poer. 6hikzIiAC5CJmHsHBCJph5BCJph5CJ5BCJph5BCJph5BCJHph
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