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How does a nuclear power station work?
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Nuclear reactor What do the control rods do?
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krypton Uranium barium
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Nuclear Fission Incoming slow neutron
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Nuclear Fission Nuclear Fission Incoming slow neutron
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Nuclear Fission Nuclear Fission Incoming slow neutron
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Nuclear Fission Incoming slow neutron
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Nuclear Fission Incoming slow neutron
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Nuclear Fission Incoming slow neutron
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Nuclear Fission Incoming slow neutron
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Nuclear Fission Incoming slow neutron
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Nuclear Fission Incoming slow neutron
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Nuclear Fission Incoming slow neutron
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Nuclear Fission Neutron is absorbed by nucleus
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Nuclear Fission Neutron is absorbed by nucleus
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus becomes unstable and starts to oscillate.
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Nuclear Fission Nucleus splits! (fissions) into two large pieces and 2 or 3 neutrons
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Nuclear Fission Massive release of energy. Particles fly apart
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Nuclear Fission Massive release of energy. Particles fly apart
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Nuclear Fission Massive release of energy. Particles fly apart
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Nuclear Fission Massive release of energy. Particles fly apart
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Nuclear Fission Massive release of energy. Particles fly apart
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Mass has been turned into energy
Mass Before Mass After Mass has been turned into energy
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Nuclear reactor What do the control rods do?
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Usually made of Boron Absorb the excess neutrons so a chain reaction does not happen.
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Chain Reaction
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Chain Reaction
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Chain Reaction
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Chain Reaction Little bang
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Chain Reaction Little bang
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Chain Reaction Little bang
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Chain Reaction Little bang
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Chain Reaction
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Chain Reaction Bigger bang
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Chain Reaction
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Chain Reaction
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Chain Reaction
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Chain Reaction
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Chain Reaction Even bigger bang
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Chain Reaction
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Chain Reaction
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Chain Reaction
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Chain Reaction
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Chain Reaction
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Extremely large bang
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After 30 cycles, more than 68000 billion atoms have been spilt
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The first atomic bombing
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Nuclear disaster @ Chernobyl
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Nuclear fission 2 Explain the stages in the diagram to the right. 1
1. 2. 1 Uranium is used to produce heat in a nuclear reactor. This is called ___________ fission. The decay of uranium can be a chain reaction. Finish the diagram of the large scale fission….. A Nuclear bomb Why did it happen?
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Little boy-Uranium Hiroshima bomb Type Nuclear weapon Place of origin
United States Specifications Weight 9,700 pounds (4,400 kg) Length 120 inches (3.0 m) Diameter 28 inches (710 mm)
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It has been estimated that 130,000 to 150,000 persons had died by the end of December 1945.
Its design was not tested in advance, unlike the more complex plutonium bomb Fat Man.
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Fat man- plutonium core
Nagasaki Fat man- plutonium core Type Nuclear weapon Place of origin United States Specifications Weight 10,213 pounds (4,633 kg) Length 10.7 feet (3.3 m) Diameter 5 feet (1.5 m)
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An estimated 39,000 people were killed outright by the bombing at Nagasaki, and a further 25,000 were injured.
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Nagasaki 2 days before the bomb
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Nagasaki 3 days after the bomb
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Nagasaki 11 miles high
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Exam style questions 1.Explain how the chain reaction is controlled in
a nuclear reactor 2. Assuming all three neutrons go on to spilt other atoms, how many atoms would have been split in on the: 3rd cycle 20th cycle 15th cycle 3. Use the diagram how a nuclear power station works in terms of nuclear fission and the stages that follow.
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Diagram
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