1. Main Idea: Energy is transferred throughout earths atmosphere
11.1
Main Idea: Energy is transferred throughout earths atmosphere

2. Atmospheric composition
What is AIR??????
78% Nitrogen
21% Oxygen
1% Other
0.93%-Argon
.038%-Carbon Dioxide
0-4%-water vapor
0.01%-Trace gasses

4. Atmospheric layers Exosphere Thermosphere Mesosphere Stratosphere
Troposphere
Each layer differs in composition and temperature

6. Troposphere Closest to earths surface
Contains most of the mass of the atmosphere
Where weather occurs
As altitude increases the temperature decreases (mountain peaks)
Height of the troposphere varies
Where troposphere stops and stratosphere begins is call the Tropopause

7. TROPOPAUSE

10. Stratosphere Above the troposphere Temp increases with altitude
Temp stays constant at the lower level of the stratosphere until it reaches the OZONE layer.
Once the ozone layer (video) starts the temperature increases as altitude increases because ozone molecules absorbs ultraviolet radiation.
Top is the stratopause

11. STRATOPAUSE

14. Mesosphere Above stratosphere or stratopause
Temperature decreases with altitude because very little solar radiation is absorbed in this layer
Shooting stars
Top is called mesopause

15. Mesopause

17. Thermosphere
Extremely low density of air causes temperature to rise dramatically
Temperature more than 1000 degrees Celsius
The Ionosphere which is made of electronically charged particle is part of this.
Space shuttles

20. Exosphere Outermost layer
Transition zone between atmosphere and outer space

22. Journey through the atmosphere
Video
Stopped here

23. Energy transfer
All materials are made of particles-atoms and molecules
Even if the object is no moving the particles inside the object are always moving.
Any moving object or particle moving in random motion has kenetic energy.
The total energy of the particles is called thermal energy
What is thermal energy?

24. Thermal energy can be transferred in 3 ways
Radiation
Conduction
Convection

26. Radiation Light from the sun heats earths surface
Radiation- transfer of thermal energy by electromagnetic waves
Solar energy Is absorbed or reflected

27. ABOSORPTION
REFLECTION

28. RADIATION-rate of absorption
Depends on characteristics of land
Water heats and cools much slower than land
Darker colored object absorb energy fast than lighter objects

31. The end