1 / 11

Nuclear Fission

Nuclear Fission. P4h(part1). Can you explain these images?. Learning objectives. Must; Know how nuclear stations use uranium as a fuel. Should; Describe how domestic electricity is generated at a nuclear power station.

lamis
Download Presentation

Nuclear Fission

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Nuclear Fission P4h(part1)

  2. Can you explain these images?

  3. Learning objectives • Must; Know how nuclear stations use uranium as a fuel. • Should; Describe how domestic electricity is generated at a nuclear power station. • Could; describe what happens to allow uranium to release energy snf what is meant by a chain reaction.

  4. Nuclear Power - energy from splitting Uranium atoms

  5. Natural uranium consists of two isotopes, uranium-235 and uranium-238. The fuel used in a nuclear power station contains a greater proportion of the uranium-235 isotope that occurs naturally. The fuel is called ‘enriched uranium’ and forms the fuel rods. How a nuclear power station works.

  6. In a nuclear power station, atoms of uranium-235 are bombarded with neutrons. A neutron is absorbed by the nucleus of a uranium-235 atom. The nucleus is now less stable than before and it splits into two parts and releases energy in the form of heat. (This heat is then used to boil water which produces steam which then turns the Turbines, that turn the generator to produce electricity.) Several neutrons are also produced-these may go on to strike the nucleii of other Atoms causing further fission reactions. This is called a CHAIN REACTION and produces a large amount of energy.

  7. Nuclear Power - fission Fast neutron from previous decay cause the Uranium nucleus to split.

  8. Nuclear Power Kr n More decays Fission n n Uranium n In the reaction above a neutron from a previous decay can lead to more and more decays. Ba This is called a chain reaction.

  9. An atomic bomb, if the uranium is above a certain critical size (about the size of a tennis ball) fission occurs spontaneously. A nuclear submarine is powered by a nuclear reactor in a similar way to a nuclear power station. Uses of nuclear fuel

  10. Task • Use books, leaflets, or the internet to find out more about nuclear power stations • Produce a summary sheet or leaflet about the advantages and disadvantages of nuclear power.

  11. Summary

More Related