Sec 2 NA Air Pollution

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Sec 2 NA Air Pollution

  1. 1. Pollution
  2. 2. Types of pollutions <ul><li>Air </li></ul><ul><li>Water </li></ul><ul><li>Land </li></ul>
  3. 6. What is pollution? <ul><li>Introduction of substance into the environment such that it results in unpleasant or damaging effects on people. </li></ul>
  4. 7. What is waste? <ul><li>Refers to materials that are useless and no longer wanted. </li></ul><ul><li>Waste generated by households includes leftover food and unclean, used water. </li></ul><ul><li>Waste can be generated by industrial and agriculture activities. </li></ul><ul><li>When waste is not disposed properly or there is an excessive amount of waste, pollution occurs. </li></ul>
  5. 8. Air pollution <ul><li>Occurs when pollutants such as dust and smoke are released into the environment. </li></ul><ul><li>When dust and smoke particles are suspended in the air, result in haze. </li></ul><ul><li>Dust and smoke combine with water vapour and toxic gases from factories to form smog. </li></ul>
  6. 12. Smog (common in city)
  7. 13. Smog (smoke+fog)
  8. 14. Causes of pollutions <ul><li>Natural </li></ul><ul><ul><li>Volcanic eruptions </li></ul></ul><ul><ul><li>Forest fires </li></ul></ul><ul><li>Human activities </li></ul><ul><li>Industries </li></ul><ul><li>Motor vehicles </li></ul><ul><li>Construction work </li></ul>
  9. 15. Causes of air pollution
  10. 26. Consequences of air pollution <ul><li>Health problems </li></ul><ul><ul><li>Breathing difficulties e.g. asthma </li></ul></ul><ul><li>Traffic hazards </li></ul><ul><ul><li>Flights cannot take off or land. </li></ul></ul><ul><ul><li>Tourism affected </li></ul></ul><ul><li>Environmental problems </li></ul><ul><ul><li>Acid rain </li></ul></ul><ul><ul><li>Destruction of habitat </li></ul></ul>
  11. 27. <ul><li>Do you want to go out looking like that? </li></ul>

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