1. Weather Unit (DPI)
Laura LeMay

2. What gases are present in the air?
Questions?
What is AIR?
What gases are present in the air?

3. Blanket of air that surrounds the Earth
ATMOSPHERE
Atmos= vapor
sphere= round/ball
Blanket of air that surrounds the Earth

4. DRY Gases in the Atmosphere
Nitrogen %
Oxygen %
Trace %
(ex: CO2, Argon, Krypton, helium, hydrogen)

5. Other things found in AIR
Water Vapor %
Dust
Smoke
Minute particles
Ozone (O3)

6. How does the AIR get mixed?
Wind and Air currents
HOT air rises
COLD air Sinks

7. What holds the atmosphere to the Earth?
GRAVITY

8. HUMAN CONNECTION!!!! Atmosphere: Nitrogen 78 % Water Vapor 0-5 %
Carbon Dioxide trace
Oxygen %
Human Exhale:
Nitrogen %
Water Vapor %
Carbon Dioxide %
Oxygen %