weather chapter 9

Card Set Information

weather chapter 9
2011-12-12 19:53:19
weather chapter

weather exam study
Show Answers:

  1. what are the 4 scales of wind motions based on the size of eddy and its life span(smallest to largest)?
    • 1.microscale
    • 2.mesoscale
    • 3.synoptic
  2. what are the two different types of turbulance?
    • 1. mechanical turbulance
    • 2. thermal turbulance
  3. Mechanical turbulance
    • -eddy motions created by obstructions.
    • -creates a drag on the fow of air, one far greater than that caused by molecular viscosity.
  4. thermal turbulance
    effected by day time (uneven) surface heating.
  5. viscosity
    the resistence of fluid flow.
  6. molecular viscosity
    the small-scale internal fluid friction that is due to the random motion of the molecules within a smooth flowing fluid, such as air.
  7. what are the 6 local wind systems?
    • 1. sea breeze
    • 2. land breeze
    • 3. valley breeze
    • 4. mountain breeze
    • 5. katabatic wind
    • 6. chinook wind
  8. what are the two types of eddies?
    • 1. vertical
    • 2. horizontal
  9. does the sea breeze blow from land to sea or from sea to land?
    it blows from sea to land
  10. when are sea breezes most stongest?
    in the afternoon
  11. does a land breeze flow from the land twards water or from the water to land?
    from land to water
  12. do mountain breezes go up, or downhill?
    downhill. valley breezes go uphill.
  13. what is a chinook wind?
    a warm dry wind that descends the eastern slope of the rocky mountains.
  14. Are Katatabatic winds slow or fast moving?
  15. what is the ideal setting for a katabatic wind?
    an elevated plateau surrounded by mountains, with an opening that slopes rapidly downhill.