Chapter 7 the atmosphere

Chapter 7 the atmosphere

1. section 1: the air around you

   • The atmosphere protects us from dangerous things from space
   • air quality is poor
   • improving air quality is important
   • the atmosphere is made of many different gasses

2. section 2 : air pressure

   • properties of air are density and pressure
   • measuring air pressure tools
     • mercury barometers, aneroid  barometer,
   • altitude affects air pressure and density

3. layers of the atmosphere

   • thermosphere, troposphere, stratosphere, mesosphere

4. Energy in the atmosphere

   • energy from the sun
     • visible light, non-visible radiation
   • energy in the atmosphere
     • Some sunlight is absorbed or reflected by the atmosphere.
   • Energy at earth surface
     • When earths surface is heated, it radiates most of the energy back into the atmosphere as infrared radiation

5. Heat transfer in the atmosphere

   • thermal energy and temperature
     • heat is measured with a thermometer in degrees of celcius or farenhight
   • how is heat transfered
     • radiation conduction convection heating the troposphere

6. Winds

   • what is wind
     • winds are caused by differences in the air pressure. 
     • wind is measured by a anemometer
     • wind chill factor makes you colder than the actual temprature
   • local wind
     • sea breeze, land breeze
   • global winds
     • global convection currents the coriolis effect
   • global wind belts
     • doldrums horse latitudes trade winds prevailing westerlies polar easterlies jet steams