Air Section #2: Air, Noise, & Light Pollution. Air Pollution can cause serious health problems to the very old, the very young, & those with heart or

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  • Slide 1
  • Air Section #2: Air, Noise, & Light Pollution
  • Slide 2
  • Air Pollution can cause serious health problems to the very old, the very young, & those with heart or lung problems research has shown more links to air pollution & diseases Americans pay tens of billions in healthcare costs related to respiratory diseases caused by air pollution
  • Slide 3
  • Short-Term Health Effects of Air Pollution headaches nausea irritation to the eyes, nose, & throat tightness in the chest coughing upper respiratory infections (bronchitis & pneumonia) makes asthma & emphysema worse these are reversible is exposure decreases
  • Slide 4
  • Long-Term Health Effects of Air Pollution emphysema lung cancer heart disease damage to the lungs of children may worsen medical conditions of the elderly
  • Slide 5
  • Police Officer Wearing a Smog Mask in Bangkok, Thailand
  • Slide 6
  • Indoor Air Pollution sometimes the quality of air inside a home or building is worse than the air outside plastics & other industrial chemical are major sources, like those found in carpets, building materials, paints, & furniture (esp. when new)
  • Slide 7
  • Indoor Air Pollution identifying & removing the sources of indoor air pollution is the most effective way to maintain good indoor air quality ventilation is key & should be increased during times such as renovating & painting
  • Slide 8
  • Sources of Indoor Air Pollution
  • Slide 9
  • Sick-Building Syndrome most common in hot places where buildings are tightly sealed to keep out the heat people can develop allergic reactions to fungi (mold & mildew) that grow in the air- conditioning ducts, ceiling tiles, carpets, & furniture
  • Slide 10
  • Radon Gas a colorless, tasteless, & odorless gas that is radioactive occurs naturally In Earths crust from the radioactive decay of uranium can seep through cracks & holes in the foundations of homes & businesses, & schools
  • Slide 11
  • Radon Gas the gas adheres to dust particles that are inhaled & enters the lungs here, radon destroys the genetic material in cells that line the air passages, leading to lung cancer people who smoke are especially susceptible
  • Slide 12
  • Radon Detector
  • Slide 13
  • Asbestos minerals that form long, thin fibers valued for their strength & resistance to hear used primarily as an insulator & as a fire retardant used extensively in building materials banned in early 1970s
  • Slide 14
  • Asbestos Fibers
  • Slide 15
  • Asbestos exposure is dangerous fibers that are inhaled can cut & scar the lungs, causing the disease asbestosis victims have more & more difficulty breathing, may eventually die of heart failure billions of dollars have been spent to remove asbestos from school buildings across the U.S.
  • Slide 16
  • Asbestos Removal
  • Slide 17
  • Noise Pollution any unnecessary sound a pollutant that affects human health & the quality of human life airplanes, construction equipment, city traffic, factories, home appliances, lawnmowers, etc. underwater noises also disrupt the ability of marine mammals to navigate & communicate
  • Slide 18
  • Health Problems from Noise Pollution loss of hearing high blood pressure stress can cause loss of sleep which can lead to decreased productivity at work or in the classroom
  • Slide 19
  • Measuring Noise Pollution the intensity of sound is measured in units called decibels (dB) the quietest sound that a human ear can hear is represented by 0 dB each increase represents a decibel level that is 10 times higher than the previous level a sound of 120 dB is a the threshold of pain & can result in permanent deafness
  • Slide 20
  • Intensity of Common Noises
  • Slide 21
  • Light Pollution unlike air & noise pollution, light pollution does not present a direct hazard to human health but it does negatively affect our environment in urban areas, inefficient lighting diminishes the view of the night sky & is a waste of energy it also affect nocturnal animals
  • Slide 22
  • Light Pollution for example lighting that is directed upwards into the night sky is lost to space this comes from billboards, signs that are lit from below, lighting of a buildings exterior, & street lights of poor quality
  • Slide 23
  • Controlling Light Pollution shield lights so the light is directed downwards use time controls so that light is used only when needed use low-pressure sodium sources which are the most energyefficient source of light