Science Quiz

What engineering principles apply to each of the following type of bridge 
listed and where can examples of each be found in nature? 

   1.BEAM 
     a.
 
     b. 

   

   2.SUSPENSION 
     a. 
 
     b. 

 
   3.PONTOON 
     a. 

     b. 


 Answer the following as completely as possible:
    

   4.WHAT DID EARLY CIVILIZATIONS USE FOR BRIDGES? 


    
   5.WHAT ARE THE MOST COMMON MATERIALS USED IN BRIDGE
     CONSTRUCTION? 


     

   6.WHAT WAS THE PROBLEM WITH IRON BRIDGES? 


     

   7.NAME AND LOCATE THE FIRST STEEL BRIDGE IN THE WORLD. 



    
   8.WHAT CAUSED THE TACOMA NARROWS BRIDGE TO COLLAPSE? 
     


   9.COMPARED TO BRIDGES, WHAT ADVANTAGES DO FERRY BOATS HAVE?
     (VICE-VERSA) 

     a. 

     b.