P2d Radiation

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P2d Radiation

  1. 1. P2d - Nuclear Radiation
  2. 2. P2d - Nuclear radiation <ul><li>In physics, radiation describes any process in which energy emitted by one body travels through a medium or through space, ultimately to be absorbed by another body. </li></ul>
  3. 3. P2d - Nuclear radiation <ul><li>Ionising radiation </li></ul><ul><li>Some types of radiation have enough energy to knock _________ out of _________ giving them a positive charge </li></ul><ul><li>This is hazardous for living things as it can lead to mutations and cancer </li></ul>Ionisation
  4. 4. Background radiation
  5. 5. Types of Radiation Alpha Beta Gamma
  6. 6. Uses of radiation - Alpha <ul><li>Smoke alarms </li></ul><ul><li>Smoke alarms contain Americium 241, which emits __________ particles </li></ul><ul><li>The alpha particles ___________ the air allowing a current to flow </li></ul><ul><li>Smoke stops this current </li></ul>
  7. 7. Uses - beta and gamma <ul><li>Beta </li></ul><ul><li>To test thickness of paper </li></ul><ul><li>Gamma </li></ul><ul><li>To check safety of welds joining metal together </li></ul><ul><li>Used in radiotherapy treatment for cancer </li></ul><ul><li>Sterilise medical equipment </li></ul>
  8. 8. Types of radiation - Summary Uses Ionisation power Penetration power Type
  9. 9. Radioactive waste
  10. 10. Radioactive waste <ul><li>Radioactive waste is… </li></ul><ul><li>It is hazardous because… </li></ul>
  11. 11. Disposing of radioactive waste
  12. 12. Disposal of radioactive waste <ul><li>Waste can stay radioactive for thousands of years </li></ul><ul><li>Bury in landfills </li></ul><ul><li>Reprocessing </li></ul><ul><li>Encase in glass & bury deep underground </li></ul>

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