17.4
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17.4 Human Impact on the Atmosphere
description
17.4. Human Impact on the Atmosphere. Common Air Pollutant Some are produced by nature thru volcanoes and forest fires Some are produced by man. The clean air act of 1970 identified 6 major pollutants. Carbon monoxide Nitrogen dioxide Sulfur dioxide Particulate matter-smoke, ash, soot - PowerPoint PPT Presentation
Transcript of 17.4
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17.4
Human Impact on the Atmosphere
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• Common Air Pollutant– Some are produced by nature thru volcanoes and
forest fires– Some are produced by man
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The clean air act of 1970 identified 6 major pollutants
• Carbon monoxide• Nitrogen dioxide• Sulfur dioxide• Particulate matter-smoke, ash, soot• Lead• ozone
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Acid Rain
• Rain is usually neutral on the pH scale• Water in the atmosphere will pick up
pollutants in the air and become acidic
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Temperature inversion
• Under certain conditions a layer of warm air may rise up above a layer of cool air
• This could cause pollution to become trapped close to the ground
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• Page 382- chart on national emissions of pollutants