Ch. 5 Sec. 5 Cancer & the Environment
chimney sweeps in London <ul><li>usually poor boys </li></ul><ul><li>soot ground into skin </li></ul><ul><li>developed ski...
Mary  Poppins-Chim   Chim  Cher- ee  song
Dr. Percival Pott <ul><li>recommended chimney sweeps bathe frequently to clean off soot </li></ul><ul><li>1 of 1 st  scien...
Scientists identified the carcinogens in soot.     They are the   same   substances that make up   the tar in   cigarette ...
EPA <ul><li>E nvironmental  P rotection  A gency </li></ul><ul><li>purpose: </li></ul><ul><ul><li>enforce environmental la...
environmental carcinogens  today asbestos ultraviolet light Vinyl  chloride arsenic
asbestos <ul><li>mineral that does not burn </li></ul><ul><li>once used in roof shingles, brake linings & insulation </li>...
Asbestos fire-proof but fatal
removing dangerous asbestos Asbestos removal video
ultraviolet light <ul><li>decrease in protective ozone layer - allows more UV light to reach Earth </li></ul><ul><li>incre...
 
Ozone hole is getting larger each year!
What is causing the depletion of the ozone layer? <ul><li>release of chlorofluorocarbons (CFCs)  </li></ul><ul><li>CFCs gi...
skin cancer can result from overexposure to the sun
Skin Cancer  (2:38)
vinyl chloride <ul><li>colorless gas that makes PVC </li></ul><ul><li>vapors cause liver, brain or lung cancer </li></ul>
arsenic <ul><li>Used for wood preservative & pesticides </li></ul><ul><li>Increases risk of cancer </li></ul>
Let's review !
asbestos ultraviolet  light environmental carcinogens  today
chimney sweeps in London <ul><li>usually poor boys </li></ul><ul><li>soot ground into skin </li></ul><ul><li>developed ski...
ultraviolet light <ul><li>decrease in protective ozone layer - allows more UV light to reach Earth </li></ul><ul><li>incre...
Dr. Percival Pott <ul><li>recommended chimney sweeps bathe frequently to reduce risk of skin cancer </li></ul><ul><li>1 of...
EPA <ul><li>Environmental Protection Agency </li></ul>
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8th grade ch. 5 sec. 5 cancer & the environment

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8th grade ch. 5 sec. 5 cancer & the environment

  1. 1. Ch. 5 Sec. 5 Cancer & the Environment
  2. 2. chimney sweeps in London <ul><li>usually poor boys </li></ul><ul><li>soot ground into skin </li></ul><ul><li>developed skin cancer </li></ul>
  3. 3. Mary Poppins-Chim Chim Cher- ee song
  4. 4. Dr. Percival Pott <ul><li>recommended chimney sweeps bathe frequently to clean off soot </li></ul><ul><li>1 of 1 st scientists to understand environment can affect people’s health </li></ul>
  5. 5. Scientists identified the carcinogens in soot. They are the same substances that make up the tar in cigarette smoke.
  6. 6. EPA <ul><li>E nvironmental P rotection A gency </li></ul><ul><li>purpose: </li></ul><ul><ul><li>enforce environmental laws </li></ul></ul><ul><ul><li>identify environmental carcinogens </li></ul></ul><ul><ul><li>develop strategies for protecting people </li></ul></ul>
  7. 7. environmental carcinogens today asbestos ultraviolet light Vinyl chloride arsenic
  8. 8. asbestos <ul><li>mineral that does not burn </li></ul><ul><li>once used in roof shingles, brake linings & insulation </li></ul><ul><li>breathing in fibers can cause lung cancer </li></ul><ul><li>manufacture & use banned in 1989 </li></ul>Asbestos
  9. 9. Asbestos fire-proof but fatal
  10. 10. removing dangerous asbestos Asbestos removal video
  11. 11. ultraviolet light <ul><li>decrease in protective ozone layer - allows more UV light to reach Earth </li></ul><ul><li>increase in skin cancer </li></ul>
  12. 13. Ozone hole is getting larger each year!
  13. 14. What is causing the depletion of the ozone layer? <ul><li>release of chlorofluorocarbons (CFCs) </li></ul><ul><li>CFCs given off by refrigerators, air conditioners & aerosol cans. </li></ul>
  14. 15. skin cancer can result from overexposure to the sun
  15. 16. Skin Cancer (2:38)
  16. 17. vinyl chloride <ul><li>colorless gas that makes PVC </li></ul><ul><li>vapors cause liver, brain or lung cancer </li></ul>
  17. 18. arsenic <ul><li>Used for wood preservative & pesticides </li></ul><ul><li>Increases risk of cancer </li></ul>
  18. 19. Let's review !
  19. 20. asbestos ultraviolet light environmental carcinogens today
  20. 21. chimney sweeps in London <ul><li>usually poor boys </li></ul><ul><li>soot ground into skin </li></ul><ul><li>developed skin cancer </li></ul>
  21. 22. ultraviolet light <ul><li>decrease in protective ozone layer - allows more UV light to reach Earth </li></ul><ul><li>increase in skin cancer </li></ul>
  22. 23. Dr. Percival Pott <ul><li>recommended chimney sweeps bathe frequently to reduce risk of skin cancer </li></ul><ul><li>1 of 1 st scientists to understand environment can affect people’s health </li></ul>
  23. 24. EPA <ul><li>Environmental Protection Agency </li></ul>
  24. 25. What does the EPA do? <ul><li>enforce environmental laws </li></ul><ul><li>identify environmental carcinogens </li></ul><ul><li>develop strategies for protecting people </li></ul>
  25. 26. What is causing the depletion of the ozone layer? <ul><li>release of chlorofluorocarbons (CFCs) </li></ul><ul><li>CFCs given off by refrigerators, air conditioners & aerosol cans. </li></ul>

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