Bridge Unit Test

Match the common bridge building material with the strength it is used for.

Tensile strength relates to ​​ (a)  

Compressive strength relates to ​ (b)  

• Steel
• Concrete

When the span of a bridge is doubled, the bridge gets how much weaker?

• 0%

• 25%

• 50%

• 80%

• 100%

Who designs bridges?

• civil engineers

• designers

• architects

• mechanics

Which bridge type would have the most problems (such as twisting or bending) if you did not build it carefully?

• Truss

• Suspension

• Beam

• Arch

Who invented stone arch bridges and concrete?

• Greeks

• Romans

• Americans

• Germans

Refer to the diagram of the beam. Label where the beam experiences compressive and tensile forces.

a

b

Compression

Tension

Put the steps of the engineering design process in the correct order.

1) ​ (a)   2) ​ (b)   3) ​ (c)   4) ​ (d)   5) ​ (e)  

• Ask
• Imagine
• Plan
• Create
• Test

Triangles are unique because of their ability to evenly distribute loads and forces.

• True

• False

Bridges are not necessary in our society.

• True

• False

In math, lbs/in² is the units used for the same thing that psi units are used for in science. What is it?

• pressure strength inside

• pounds per square inch

• pounds divided by inches

• parts squared individually