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PERC

PERC. You need your book go get it. AIR POLLUTION AND THE ENVIRONMENT. What can make air pollution worse?. Thermal Inversion Smog trapped between warm & cool air layers Stays close to ground Intensifies effects of air pollution. How does air pollution affect plants?. Makes stems brittle

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PERC

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  1. PERC

  2. You need your book go get it

  3. AIR POLLUTION AND THE ENVIRONMENT

  4. What can make air pollution worse? • Thermal Inversion • Smog trapped between warm & cool air layers • Stays close to ground • Intensifies effects of air pollution

  5. How does air pollution affect plants? • Makes stems brittle • Leaves become spotted • Chlorosis- bleaching of leaf • Lesions- scars/tissue death

  6. Chlorosis and necrosis of white pine needles Necrotic lesions on lower surface of potato leaves Necrosis of watermelon leaf

  7. Why should we care if air pollution affects plants? • Kills agricultural crops • Might affect oxygen levels in atmosphere • Plants are useful indicators of air pollution problems- 1st to show signs of problems

  8. What is acid rain? • Rain or snow that is more acidic than normal precipitation. • Normal rain = pH of 5.6 • Acid rain = pH below 5.6 • Comes from a primary pollutant- carbon, nitrogen, sulfur • Creates secondary pollutant when combined with water- carbonic acid, sulfuric acid.

  9. How does acid rain affect plants? • Kills leaves, kills plant • Prevents sprouting of seeds • Destroys entire forest

  10. How does acid rain affect animals/ecosystems? • Mutate eggs/larvae • Fewer eggs produced • Acid rain “leaches” aluminum out of soil, if gets on fish gills, causes suffocation • Kills immediately

  11. How does acid rain affect humans? • Destroys monuments/ statues • Calcium carbonate & marble statues dissolve • Metal statues tarnish • Personal property affected • Corrodes steel • Discolors paint • Corrodes tires

  12. What can be added to acidic soil or water to neutralize acidity? • Powdered lime

  13. Global Warming Presentations 6th period present 3/23 8th 3/23 and 3/25

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