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

1. Nuclear Radiation And You!

2. What is radiation?

3. The emission of energy waves through space

4. Nuclear radiation comes from radioisotopes

5. An iso-what? An Isotope

6. Isotope: An atom w/ extra neutrons

7. Review

8. Normal atoms: Equal # of Protons and Neutrons

9. Why do we care? This can happen:

10. Extra neutrons = extra mass Normal # Many Neutrons Greater Mass

11. Extra mass means charged particles act differently

12. Masses:1 neutron = 1 proton +1 neutron = +1 atomic mass (but no change in charge)

13. Heavy Water Normal Water Frozen Heavy Water

14. Don’t: DRINK! Do: Use to slow down/direct nuclear reactions

15. What radioisotopes do we use? Uranium Cesium Iodine

16. Wait, don’t they glow?

17. Sorry to burst your bubble! Nope, that’s science fiction stuff

18. Well, ok, but what are isotopes used for?!?

19. Catalysts Used to make chemical reactions occur faster

20. Following pathways in your body

21. DNA and radiation don’t play nice

22. Cancer Treatments

23. Cancer’s DNA is damaged

24. Radiations pushes the cancer cell over the edge

25. Radiation can damage DNA… until the cell dies

26. Some things in science should be left alone Warfare

27. We can use it for energy!!!

28. Why? Very little waste is produced!

29. Coal burning creates heat to boil H2O

30. The H2O steam travels down a pipe Creating lots of pressure!!!

31. The steam blasts against a turbine Thus turning it

32. A magnet turns inside a copper coil Making electrons flow

33. Flowing e- = ELECTRICITY

34. Shocking, isn’t it?

35. Electricity powers our

36. Pro: Coal is CHEAP!

37. Con: Burnt coal gives up many pollutants

38. Greenhouse Gases Global Warming = Not Cool

39. So, what is ‘clean energy?’

40. Nuclear isotopes give off thermal E

41. What can this heat be used for?!?

42. Boil H2O, of course!

43. The process continues like coal-burning plants But no pollution

44. There are many safety regulations But accidents do happen

45. Chernobyl, Ukrainian SSR

46. ~4,000 died, many suffered

47. Three Mile Island, U.S.A.

48. Fukushima Daiichi, Japan

49. What happened in Japan?

50. Japan Hit by 8.9 M earthquake, followed by scores of tremors Causing a massive tsunami Earthquake damages nuclear reactor and radiation shields Meltdown commencing

51. What’s a meltdown? Melting of nuclear fuel rods

52. If the rods cannot be cooled? Then they release too much heat Then melt and combust

53. Drop in sea H2O to cool the fuel (as a last resort)

54. Combustion creates gasses NO!! Not that kind!

55. Gasses that rise when heated Combustion also causes heat Radioactive particles get caught in the escaping gas and travel 1000s of miles by wind

57. Gases Contain Radioactive Subs. The Radioisotopes breakdown

58. These Isotopes release: Alpha particle – a, 2p2n, He-2e- Beta particle – β, high-speed e- or positron Positron – antimatter electron counterpart Gamma particle – γ, lowest form of radiation on the EM Scale, mainly produced by fission (atom-fission nuclear explosive)

59. Radiation Poisoning Headache/Fever Nausea Death Itching/Blistering Vomiting

60. The Particles can Travel Around the World

61. How can you protect yourself?

62. …Next Time Ya’ll come back, now, ya here?

63. Adam Hamrick (ahamrick6) Spring 2011 EDUC 6305 FSU