Module 1: Hydrologic Cycle
Lecture 1: Weather and hydrologic cycle
 

Atmosphere
  • Troposphere
    • Most of the weather occurs. 
  • Stratosphere
    • 19% of the atmosphere’s gases;
    • Ozone layer
  • Mesosphere
    • Most meteorites burn up here.
  • Thermosphere
    • High energy rays from the sun are absorbed;
    • Hottest layer. 
  • Exosphere
    •  Molecules from atmosphere escape into space; satellites orbit here.  
                          
  (http://www.windows.ucar.edu/tour/link=/earth/Atmosphere/layers_activity_print.html)