1. Atmosphere Notes

2. Atmosphere: Layer of gases that surround the Earth

3. Composition: 78% Nitrogen 21% Oxygen .9% Argon .1% Other Gases

5. Ozone – O3, absorbs harmful UV radiation, being destroyed by particulates

7. Decreases as altitude increases

10. Where the weather is found

14. Scattering: The deflection of solar radiation due to clouds, dust, water droplets, and gas particles Thus sunlight hits the Earth surface from all directions and makes the sky blue

15. Reflection: When solar radiation reaches the Earth surface it is either absorbed or reflected back into the atmosphere depending on the surface

16. Absorption: Absorbed solar radiation is converted into infrared waves (heat) and keeps the Earth warm

17. Greenhouse Effect: The warming of the surface and lower atmosphere of Earth that occurs when carbon dioxide, water vapor, and other gases in the air absorb and re-radiation solar radiation

18. Conduction: The transfer of heat through a material through direct contact Collisions between molecules in the atmosphere transfer heat energy

19. Convection: Warm air moves up as cool air sinks due to density differences.