1. Bell Ringer
Name the four layers of the atmosphere and describe the temperature in each layer.
Troposphere: decreasing temp.
weather
Stratosphere: increasing temp.
Ozone layer
Mesosphere: decreasing temp.
Coldest layer
Thermosphere: increasing temp.
ionosphere

2. Chapter 23 The Atmosphere
Section 1
Characteristics of Atmosphere
Notes 23-3

3. Air pollution
Any substance in the atmosphere that is harmful to people, animals, plants or property
Sulfur dioxide
Carbon monoxide
Lead
Hydrocarbons
Ozone

4. Air pollution Effects EPA’s Health Effects of Air Pollution
Long-term effects on health
Decreases one’s ability to resist many diseases
EPA’s Health Effects of Air Pollution

5. Air Pollution Sources Produces Burning of fossil fuels
Before automobiles, factories and homes burning coal was the top cause
Today it comes from burning coal and petroleum fuels
Produces
Sulfur dioxide, hydrocarbons, nitrogen oxide, carbon monoxide and lead

6. Air Pollution Acid Rain
Pollutants in the air when combined with water in the atmosphere causes acid rain
Falls to the ground in the form of rain, snow, sleet or mist
Can kill crops and other plants, poison fish and ruin soil

7. Air Pollution Temperature Inversion:
When warm air traps cold air at the surface of the earth
This doesn’t allow for air circulation
Normally warm air is at the surface and cold air is above it
Pollution also gets trapped
Produces smog
Combines smoke and fog

9. Air Pollution Temperature Inversions Topography can make it worse
In Los Angeles, cool Pacific air, that is polluted, is trapped.
Mountains that boarder the city keep air from circulating

10. Temperature Inversion

11. Homework
Section Review
p. 462
1-4