Half life

• What is half life ?

  time taken for the number of nuclei of an isotope to half
• how does the process of nuclear fusion leads to the release of energy ?


  lighter nuclei join to form heavier nuclei

  some of the mass is converted to electricity
• Describe the process of nuclear fission inside a nuclear reactor.


  neutron absorbed by uranium nucleus

  nucleus divides into two parts

  neutrons are released

  gamma rays are emitted
• Explain the advantage of the radioactive waste having a shorter half-life.


  waste will decay at a greater rate and risk of harm will decrease quicker