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Nuclear Power

Nuclear Power. Energy is released when an uranium nucleus is spilt into other elements; Krypton and Barium nucleus. Nucleus reaction is not chemical reaction. Therefore the energy released from nuclear fission per unit is more than that of chemical energy e.g. fossil fuel.

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Nuclear Power

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  1. Nuclear Power Energy is released when an uranium nucleus is spilt into other elements; Krypton and Barium nucleus Nucleus reaction is not chemical reaction. Therefore the energy released from nuclear fission per unit is more than that of chemical energy e.g. fossil fuel. The radioisotope used in most nuclear power station is uranium – 235. This is obtained by enriching uranium 234. An radioisotope is an unstable atom of an element that is radioactive.

  2. Releasing Energy • To release energy from a block of uranium. A slow moving neutron is fired at the Uranium. 2. This makes the U-235 temporarily into U-236. U-236 is unstable and will decay into K and Ba. 3. Energy is released and 2 or 3 more neutrons are also fired out. 4. The neutrons released will make other U unstable and decay; releasing more energy and neutrons. The process will go on forever releasing more energy by nuclear fission. Until all the U has decayed. 5. This is called a chain reaction

  3. Nuclear Reactor 2 1. If chain reaction is uncontrollable and so we can not harness the energy safely. 4 3 2. An unstable chain reaction can lead to a nuclear explosion or a melt down e.g. Chernobyl 1 Solution 1. Graphite Moderators are used to slow the fast moving neutrons down. This will allow the slow moving neutron to be absorbed by the Uranium 2. Boron moderator known as control rods are lowered into the reactor to absorb the neutrons; preventing the chain reaction. 3. This will control the amount of energy released. 4. The energy released is used to heat fluid up, this will turn a turbine and generate electricity

  4. Nuclear Reactor Movie Nuclear Fission Movies

  5. Bibliography • http://flashwebmaster.com/demo/3Dgraphics/reactor.jpg • http://www.shep.net/resources/curricular/physics/P30/Unit4/Topic17_Fission-Fusion/Video/NuclearReactor.mov • http://www.classzone.com/books/earth_science/terc/content/visualizations/es0702/es0702page01.cfm?chapter_no=07 • http://blender3dspace.tripod.com/images/radioactive.jpg • Text Book The End

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