Nuclear radiation

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PPt on nuclear radiation, energy uses, poisoning, and Japan. Created for FSU EDUC 6305 Spring 2011, by ahamrick6.

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Nuclear radiation

  1. 1. Nuclear Radiation<br />And You!<br />
  2. 2. What is radiation?<br />
  3. 3. The emission of energy waves through space<br />
  4. 4. Nuclear radiation comes from radioisotopes<br />
  5. 5. An iso-what?<br />An Isotope<br />
  6. 6. Isotope:<br />An atom w/ extra neutrons<br />
  7. 7. Review<br />
  8. 8. Normal atoms:<br />Equal # of Protons and Neutrons<br />
  9. 9. Why do we care?<br />This can happen:<br />
  10. 10. Extra neutrons = extra mass<br />Normal #<br />Many Neutrons<br />Greater Mass<br />
  11. 11. Extra mass means charged particles act differently<br />
  12. 12. Masses:1 neutron = 1 proton<br />+1 neutron = +1 atomic mass (but no change in charge)<br />
  13. 13. Heavy Water<br />Normal Water<br />Frozen Heavy Water<br />
  14. 14. Don’t: DRINK!<br />Do: Use to slow down/direct nuclear reactions<br />
  15. 15. What radioisotopes do we use?<br />Uranium<br />Cesium<br />Iodine<br />
  16. 16. Wait, don’t they glow?<br />
  17. 17. Sorry to burst your bubble!<br />Nope, that’s science fiction stuff<br />
  18. 18. Well, ok, but what are isotopes used for?!?<br />
  19. 19. Catalysts<br />Used to make chemical reactions occur faster<br />
  20. 20. Following pathways in your body<br />
  21. 21. DNA and radiation don’t play nice<br />
  22. 22. Cancer<br />Treatments<br />
  23. 23. Cancer’s DNA is damaged<br />
  24. 24. Radiations pushes the cancer cell over the edge<br />
  25. 25. Radiation can damage DNA…<br />until the cell dies<br />
  26. 26. Some things in science should be left alone<br />Warfare<br />
  27. 27. We can use it for energy!!!<br />
  28. 28. Why?<br />Very little waste is produced!<br />
  29. 29. Coal burning creates heat to boil H2O<br />
  30. 30. The H2O steam travels down a pipe<br />Creating lots of pressure!!!<br />
  31. 31. The steam blasts against a turbine<br />Thus turning it<br />
  32. 32. A magnet turns inside a copper coil<br />Making electrons flow<br />
  33. 33. Flowing e-<br />= ELECTRICITY<br />
  34. 34. Shocking, isn’t it?<br />
  35. 35. Electricity powers our <br />
  36. 36. Pro:<br />Coal is CHEAP!<br />
  37. 37. Con:<br />Burnt coal gives up many pollutants<br />
  38. 38. Greenhouse Gases<br />Global Warming = Not Cool<br />
  39. 39. So, what is ‘clean energy?’<br />
  40. 40. Nuclear isotopes give off thermal E<br />
  41. 41. What can this heat be used for?!?<br />
  42. 42. Boil H2O, of course!<br />
  43. 43. The process continues like coal-burning plants<br />But no pollution<br />
  44. 44. There are many safety regulations<br />But accidents do happen<br />
  45. 45. Chernobyl, Ukrainian SSR<br />
  46. 46. ~4,000 died, many suffered<br />
  47. 47. Three Mile Island, U.S.A.<br />
  48. 48. Fukushima Daiichi, Japan<br />
  49. 49. What happened in Japan?<br />
  50. 50. Japan<br />Hit by 8.9 M earthquake, followed by scores of tremors<br />Causing a massive tsunami<br />Earthquake damages nuclear reactor and radiation shields<br />Meltdown commencing<br />
  51. 51. What’s a meltdown?<br />Melting of nuclear fuel rods<br />
  52. 52. If the rods cannot be cooled?<br />Then they release too much heat<br />Then melt and combust<br />
  53. 53. Drop in sea H2O to cool the fuel<br />(as a last resort)<br />
  54. 54. Combustion creates gasses<br />NO!! Not that kind!<br />
  55. 55. Gasses that rise when heated<br />Combustion also causes heat<br />Radioactive particles get caught in the escaping gas and travel 1000s of miles by wind<br />
  56. 56.
  57. 57. Gases Contain Radioactive Subs.<br />The Radioisotopes breakdown<br />
  58. 58. These Isotopes release:<br />Alpha particle – a, 2p2n, He-2e-<br />Beta particle – β, high-speed e- or <br />positron<br />Positron – antimatter electron counterpart<br />Gamma particle – γ, lowest form of radiation on the EM Scale, mainly produced by fission (atom-fission nuclear explosive)<br />
  59. 59. Radiation Poisoning<br />Headache/Fever<br />Nausea<br />Death<br />Itching/Blistering<br />Vomiting<br />
  60. 60. The Particles can Travel<br />Around the World<br />
  61. 61. How can you protect yourself?<br />
  62. 62. …Next Time<br />Ya’ll come back, now, ya here?<br />
  63. 63. Adam Hamrick<br />(ahamrick6)<br />Spring 2011<br />EDUC 6305<br />FSU<br />

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