3.8 Nuclear power

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Explain fission of uranium and chain reaction, H: how a chain reaction is controlled in a nuclear reactor, Compare a nuclear power station with other thermal power stations

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3.8 Nuclear power

  1. 1. 3.8 Nuclear Power October 16, 2010 What would the following decay into: Uranium-238 via alpha decay Thorium-234 via beta decay Protactinium-234 via beta decay Uranium-234 via alpha decay
  2. 5. Aims <ul><li>Explain fission of uranium and chain reaction </li></ul><ul><li>H : how a chain reaction is controlled in a nuclear reactor </li></ul><ul><li>Compare a nuclear power station with other thermal power stations </li></ul>
  3. 6. Remember… <ul><li>Go to: </li></ul><ul><li>www.mrrayner.wikispaces.com </li></ul><ul><li>http://phet.colorado.edu/ </li></ul>
  4. 14. The nuclear reactor <ul><li>Fuel rods </li></ul><ul><ul><li>Easily inserted and removed, lasts a few months </li></ul></ul><ul><li>Control Rods </li></ul><ul><ul><li>Absorb neutrons (Cd, B), insert them and reaction is slowed </li></ul></ul><ul><li>Moderator </li></ul><ul><ul><li>Slows down neutrons to increase fission </li></ul></ul>
  5. 20. Complete the following sentences <ul><li>In a nuclear power station energy is released from changes in the ................................... of the atoms of the nuclear fuel </li></ul><ul><li>In a fossil-fuel power station energy is released by ................................... the fossil fuel (e.g. coal). </li></ul><ul><li>Fossil-fuel power stations release lots of carbon dioxide as a waste product. This gas contributes to ...................................................................... </li></ul><ul><li>Nuclear power stations produce .......................................... waste. </li></ul>

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