Answer the following questions. You will receive immediate feedback when you select your answer or when you click on the green check mark (). When you are finished, click the How Did I Do? button to see your score.

1. What two factors influence air pressure?
   
   

2. Do low pressure areas typically have warmer air or colder air than high pressure areas?
   
   

3. How do low pressure systems and high pressure systems interact to move air?
   
   

4. What is the name for horizontally flowing air?
   
   

5. What is the name for winds that regularly blow the same direction?
   
   

6. Does the North Pole have a high pressure system or a low pressure system?
   
   

7. What is a jet stream?
   
   

8. Look at Figure 4.1.1 and think about what you have learned about air pressure at various latitudes. Do subtropical areas generally have high pressure, or do they have low pressure?
   
   

   Figure 4.1.1

   
   
   
   

9. Which direction do the southeast trade winds blow?
   
   

10. If you were sailing a ship from Europe across the Atlantic Ocean to the US, what wind system would most likely fill the sails and take you where you wanted to go?
    
    

11. What wind systems do aircraft frequently take advantage of to fly more quickly?