1.  Write a paragraph about the factors that influence the wind–explain what the pressure gradient force, Coriolis force, and friction are and how they each influence the wind.  You can use pages 398-401 

2.  Write a paragraph summarizing the global circulation:  For each of these wind systems explain what they are and where they are located–trade winds, westerlies,  and polar easterlies.  Explain what happens in the equatorial low, subtropical high, sub polar low, and the polar high.