The atmosphere

The atmosphere

1. Troposphere

   • Lowest layer which touches earths surface
   • Life + weather
   • Every 100mts temp -1
   • Water vapour and CO2 high
   • Earths cloud + weather system
   • Contains most of atmosphere pollution

2. Stratosphere

   • Dust free and cloudless
   • Little H2O vapour and CO2
   • High concentration of ozone
     • Ozone absorbs ultra violet radiation
   • Every 100mts temp +1

3. Tropopause

   • Middle point between tropo and stratosphere
   • Reached at -50 dgrees

4. Composition

   • Dminated by 2 gases:
     • Oxygen: 20%
     • Nitrogen: 80%
   • Other 3 gases:
     • CO2
     • Ozone
     • H2O vapour