Chapter 5 Air and Water Resources

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Chapter 5 Air and Water Resources. Section 1 Air Pollution Notes 5-1. Whats in the Air?. Nitrogen, Oxygen, Carbon Dioxide, Water Vapor, and other gases All living things depend on these gases Air Pollution: any change to the atmosphere that has harmful effects - PowerPoint PPT Presentation


  • Chapter 5Air and Water ResourcesSection 1Air PollutionNotes 5-1

  • Whats in the Air?Nitrogen, Oxygen, Carbon Dioxide, Water Vapor, and other gasesAll living things depend on these gasesAir Pollution: any change to the atmosphere that has harmful effectsPollutants: cause pollutionParticles of solids (asbestos) and gases (chlorine fumes)Emissions: particles and gases released into the atmosphereVehicles, air planes, anything motorized, volcanoes

  • SmogPhotochemical smog: Thick, brownish haze formed when gases in the air react with sunlightCaused by gases emitted by automobiles and trucksGases formed when gasoline is not completely burnedHydrocarbons: compounds containing hydrogen and carbonNitrogen oxides: contain nitrogen and oxygenReact with sunlight and form ozoneToxicMajor chemical in smog

  • Clear DayIn HoustonSmog DayIn Houston

  • Temperature InversionLayer of cold air trapped next to the surface by warm airPolluted air is trapped with the cold airNormally warm air is closest to the surface and it gets colder as the distance increasesPollutants are then allowed to escape with the rising warm air

  • Temperature Inversion

  • Effects of SmogItchy, watery eyesScratchy throatLung problemsHarm bodies defense against diseaseDuring a smog alertAsthma patients should stay indoorsNo outside activities for anyone.

  • Acid RainPrecipitation that is more acidic than normalWhen coal and oil are burned, they produce nitrogen oxides and sulfur oxides.These form nitric acid and sulfuric acid when mixed with water vaporCan also be snow, sleet, or fog

  • Acid RainChanges the pH of lakes or pondsCauses survival rate of fish and turtles to declineAffects plants alsoChanges the nutrient level in the soilAffects certain types of stoneLimestone and marble are eaten awayEats away paint and that causes metal to rust


  • Indoor Air PollutionAir inside can be even worse than outsideDust, pet hair and air freshenersAsbestos (building material used in old buildings) causes cancer and lung disease and cleaning supplies can give off toxic fumesSmoke from cigarettes or cigars

  • Indoor Air PollutionCarbon Monoxide: (CO)Colorless, odorless gas that forms when wood, coal, oil or gas is burnedCan build up in enclosed areasMust use a carbon monoxide detector to determine if the gas is present

  • Indoor Air PollutionRadon: Colorless, odorless gas that is radioactiveFormed by certain rocks underground and seeps into basements through cracksMay cause lung cancer or other health problems if breathed in over many yearsGood ventilation will prevent the build up of this gas


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