3. Chapter 17 continued

4.  The horizontal movement of air from high pressure to low pressure  Moderates surface temperatures  Distributes moisture  Cleanses the atmosphere

5.  Wind vane – weather vane (direction)  Anemometer (speed)

6.  Pressure gradient  Coriolis Effect  Friction

7.  Lower level winds are affected by the surface they flow over  ocean vs. mountains

8.  Upper winds little to NO friction  120-240 kph  West to East  Location changes with the seasons

9.  What is it  Does it change with the seasons  Why do we care? https://www.youtube.com/watch?v=huweo hIh_Bw

10. But Earth DOES rotate

11.  Fairly accurate - for surface winds and pressures near the equator and poles  Not so accurate – for mid-latitudes (30 o -60 o ) where short lived pressure systems occur

12. https://www.youtube.com/watch?v=g4O9z_R5ZSc

13.  Monsoon Recall the seasonal shift of the jet stream