1. Layers of the Atmosphere

2. Gasses that make up the Atmosphere 78% Nitrogen (N 2 ) (we can not use this) 21% Oxygen (O 2 ) About 1% Water Vapor (H20) About 1% Argon (Ag2) 0.03% Carbon dioxide (CO2) About.002% other gasses

3. Troposphere Layer of Earth’s Atmosphere containing Most of the Air and Weather.

4. Stratosphere Layer of Earth’s Atmosphere containing the Ozone Layer and the Jet Stream Large Jet planes fly in the stratosphere to avoid turbulence.

5. Ozone What is ozone? O 3 Three Oxygen atoms together as one molecule The ozone layer in the Stratosphere helps absorb or reflect some of the sun’s harmful Ultra Violet Radiation. (Does Not Contribute to Global Warming)

6. Good in the Stratosphere Bad in the Troposphere SMOG (Play with Smog City)Play with Smog City At ground level, ozone is harmful to living things; –damages human health, causing respiratory problems, damages vegetation, and many man- made materials. Ground-level ozone is a key ingredient of urban smog. Air inversion can trap smog in a city. This happens in ABQ in the Winter.

7. Causes of Ozone Depletion Chlorofluorocarbons (CFCs) –Used as coolants in refrigerators and Air conditioners –Used as propellants in spray cans, hair spray, spray paint, deodorant. –Banned as part of the Montreal Protocol in 1989 Also chlorinated solvents halons methyl bromide

10. Ozone Hole This image, from September 24, the Antarctic ozone hole was equal to the record single-day largest area of 11.4 million square miles (29.5 million square kilometres), reached on Sept. 9, 2000. Satellite instruments monitor the ozone layer, and we use their data to create the images that depict the amount of ozone. The blue and purple colors are where there is the least ozone, and the greens, yellows, and reds are where there is more ozone. Credit: NASA -- http://www.nasa.gov/vision/earth/l ookingatearth/ozone_record.html http://www.nasa.gov/vision/earth/l ookingatearth/ozone_record.html

12. Ozone Creation and Recovery High in the atmosphere, some oxygen (O2) molecules absorbed energy from the Sun's ultraviolet (UV) rays and split to form single oxygen atoms. These atoms combined with oxygen (O2) to form ozone (O3) molecules, which are very effective at absorbing UV rays. Because new ozone is being made all the time, and ozone depleting chemicals are no longer released to the atmosphere, the ozone layer will recover.