9.2 Smog Heat Island Effect Noise Lights. Smog Dirty clouds of pollution.
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Transcript of 9.2 Smog Heat Island Effect Noise Lights. Smog Dirty clouds of pollution.
9.2
SmogHeat Island Effect
NoiseLights
Industrial Smog
• Power plants that burn coal and oil• Sulfur dioxide (SO2)
Photochemical Smog
• Burning gasoline• Nitrogen oxides (Nox), ozone, PAN• React with sun
Ozone
• Ground level• Irritate and
damage lungs• Difficulty breathing • Make asthma
symptoms worse
PAN
• Peroxyacetyl nitrates• Respiratory and eye irritants• Cause cancer• Kill plants
Ozone Levels
• Monitored everyday• Warnings on high days
http://www.epa.state.il.us/air/aqi/
Atmospheric Ozone
• Good• Protects earth• Radiation
Catalytic Converters
• Eliminates car emissions• Carbon monoxide (deadly) • Nitrogen (make smog and acid rain; unhealthy)• Hydrocarbons (generate ozone and smog)
Urban Heat Island Effect
• City is hotter than rural neighbors• More dark surfaces to absorb / maintain heat• More machines, air conditioners, heaters
Solutions to Heat Island
1. More plants and trees2. More light surfaces
Noise Pollution
• Distracting, irritating, or damaging sounds• Airplanes, trains• Construction• Loud music
Decibel (dB)
• Measures sound• 120 dB can cause
deafness
Light Pollution
• City lights on all night• Harms nocturnal animals• Can’t see stars