NAME_________________________________ CLASS____________________ DATE____________ 

1. What happens to lift when the surface area of an airplane's wings is increased?
   _______________________________
   
   
2. Open the Web page (http://en.wikipedia.org/wiki/Boeing_747), or a search engine, to find information about the Boeing 747. What is its wing area?_________________________
   
   
3. Refer to the above question. What is the Boeing 747's takeoff weight?__________________
   
   
4. How many passengers can the Boeing 747 carry? ______________________
   
   
5. What is the ratio of the Boeing 747's takeoff weight to its wing area? __________________
   
   
6. Now use the Web page (http://en.wikipedia.org/wiki/Boeing_777), or a search engine, to find information about the Boeing 777. What is its wing area?
   ___________
   
   
7. What is the takeoff weight of the Boeing 777? ___________________
   
   
8. How many passengers can the Boeing 777 carry? ___________________
   
   
9. What is the ratio of the Boeing 777's takeoff weight to its wing area? _______________
   
   
10. Look up the DC-8 at (http://en.wikipedia.org/wiki/DC-8), or use a search engine. What is its wing area? __________________
    
    
11. What is the DC-8's takeoff weight? ______________________
    
    
12. How many passengers can the DC-8 carry? _______________________
    
    
13. What is the ratio of the DC-8's takeoff weight to its wing area?___________________
    
    
14. Find the DC-10 at (http://en.wikipedia.org/wiki/DC-10), or use a search engine . What is its wing area? ____________________
    
    
15. What is the DC-10's takeoff weight? _________________________
    
    
16. How many passengers can the DC-10 carry? __________________________
    
    
17. What is the ratio of the DC-10's takeoff weight to its wing area? _______________
    
    
18. If both the Boeing 777 and the DC-10 weighed 130,000 kg, which airplane's wings would generate the most lift? ______________________
    
    
19. Which of the two planes in the previous question has a greater possible takeoff weight? ___________________
    
    
20. Which two of the four jet airplanes above have the closest takeoff weight to wing area ratios? ________________________
    
    
21. Explain the relationships among lift, takeoff weight, and wing area. You may want to read the slide called Forces on an Airplane. ___________________________________________
    
    
22. Do you see a relationship between wing span and passenger number? _________________
    
    
23. Where are slats located and how do they affect an airplane's lift?______________________
    
    
24. Where are the flaps located? ____________________