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PEABODY PUBLIC SCHOOLS

Congratulations 
  STARS of the MONTH

 CURRICULUM MAPS


Forces and Motion: Bridge Building

Name: ____________________________________     Cluster _____________________
Write your answers in the space provided.

1.  Go to http://www.pbs.org/wgbh/nova/bridge/build.html.  Scroll to the bottom of the page and "play the game".  Click on "non-shockwave" version.  Write the answer to each site problem below.
        Site 1: ______________________________________

        Site 2:  ______________________________________

        Site 3:  ______________________________________

        Site 4:  ______________________________________
 

2.      Take the Bridge Challenge at the following site: http://www.pbs.org/wgbh/buildingbig/bridge/challenge/index.html
What kind of bridge should you build?
   
Location 1:  ______________________________________

Location 2:  ______________________________________

Location 3:  ______________________________________

Location 4:  ______________________________________
 

3.      Go to the Building Big lab at http://www.pbs.org/wgbh/buildingbig/lab/index.html

Click on "Forces". 
        Click on "Squeezing" - Define compression.


        Click on "Stretching" - Define tension.


        Click on "Bending" - Define bending


        Click on "Sliding" - Define shear.


        Click on "Twisting" - Define torsion.

4.    Go to the Building Big lab at http://www.pbs.org/wgbh/buildingbig/lab/index.html
Click on "Loads".
        What are forces that act on structures called? _____________________________
 
         Click on "Weight of objects".  What is live load?


         Click on "Temperature".  What is thermal load?


         Click on "Earthquake".  How do earthquake loads affect a structure?


         Click on "Wind".  How does wind load affect a structure?  How do you stabilize the structure to handle wind load?


         Click on "Vibration".  Define dynamic load.  What design feature would address dynamic load?


          Click on "Materials". Choose one material from the left hand column.  Explain its strengths and weaknesses.

         Click on "Shape".  How do forces affect a rectangular shape? an arch? a triangle?

 
      
Build a Bridge in an Earthquake Zone
Go to the following site to see if you can design and build a bridge that will withstand earthquakes.
http://www.newbaybridge.org/classroom/

Vocabulary Test
The terms on the test are on a separate hand out. 
Use the following glossary to define the words and prepare for the test.
http://www.pb.org/wgbh/buildingbig/glossary

On your second visit to the library you will take the vocabulary test.
Log into Study Island http://www.studyisland.com
click on Grade 7. English Language Arts - at the bottom of the page go to
Custom Material – Bridges  - 15 question quiz
 

Introduction to Bridges

Arch Bridges – view video

http://www.teachersdomain.org/9-12/sci/phys/mfw/bbarch/index.html

 
Suspension Bridge – view video

http://www.teachersdomain.org/9-12/sci/phys/mfw/bbsuspension/index.html

 
Cantilever Bridge – view video

http://www.teachersdomain.org/9-12/sci/phys/mfw/bbcantilever/index.html

Truss Bridge – view video

http://www.teachersdomain.org/6-8/sci/phys/mfw/bbtrussanim/index.html