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Chapter 12-AIR

Chapter 12-AIR. Air, Noise, and Light Pollution. Indoor Air Pollution. Air quality in buildings can be worse than outside due to substances found in carpet, furniture, paint, etc. Ventilation is key to controlling

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Chapter 12-AIR

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  1. Chapter 12-AIR Air, Noise, and Light Pollution

  2. Indoor Air Pollution • Air quality in buildings can be worse than outside due to substances found in carpet, furniture, paint, etc. • Ventilation is key to controlling • Sick-building syndrome- Buildings that are securely sealed and harbor mold, fungi, etc. • Common in hot or cold areas

  3. Indoor Air Pollution • Radon gas- Colorless, tasteless, and odorless • Produced by decay of Uranium • Seeps up through cracks and holes where it adheres to dust • Destroys genetic material in lung cells • 2nd-leading cause of lung cancer

  4. Indoor Air Pollution • Asbestos- Long, thin fibers valued for their strength • Used as insulation and fire retardant • Banned in early 1970s • Cut and scar lungs- Asbestosis • Trouble breathing • Eventual heart failure

  5. Noise Pollution • Sound measured in decibels (dB) • Intensity-loudness • 120 dB causes pain with continuous exposure causing permanent deafness • Unneeded noise can cause health problems • Loss of hearing • High blood pressure • Stress

  6. Light Pollution • No direct hazard to human health • Inefficient lighting diminishes view of night sky • Inefficient lighting is energy waste • Light directed upward is lost into space • Downward light is best • Energy efficient light includes: • Not using when not needed • Low pressure sodium sources

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