Answer to Question 1ANS: D
The boundary between a polar cell and a Ferrel cell creates extratropical cyclones. This occurs in each
hemisphere. This area is called a polar front and generates large storms during winter seasons when the
temperature and density differences are more pronounced. Information can be found in the section
Storms Are Variations in Large-Scale Atmospheric Circulation.
Answer to Question 2ANS: A
There is a Ferrel cell, a Hadley cell, and a polar cell in each hemisphere. The circulation of these cells
are driven by the uneven solar heating and influenced by the Coriolis Effect. Information can be found
in the section The Atmosphere Moves in Response to Uneven Solar Heating and Earth's Rotation.