Building Bridges Pretest

Friction in which two surfaces are not moving past each other.

• Fluid

• Sliding

• Rolling

• Static

The unit of force is _______.

• kg

• s

• m

• N

A _______ is a push or pull.

• mass

• speed

• force

• time

If the forces acting on an object are unbalanced, what happens?

• the object remains at rest.

• the object will not move.

• the object moves in constant motion.

• the object accelerates.

Which of the following is the load on a bridge caused by a truck moving across the bridge?

• settlement load

• live load

• dead load

• thermal load

Which of the following is the load on a bridge caused by the weight of the bridge materials?

• settlement load

• live load

• dead load

• thermal load

Which bridge type consists of a platform supported by columns underneath at specific intervals?

• arch

• beam

• suspension

• load

Which bridge type consists of a platform supported by cables from above?

• arch

• beam

• suspension

• load

Which engineering step would most likely include the building of a three-dimensional prototype?

• Ask

• Imagine

• Plan

• Create

After testing a prototype in relation to its requirements, which of the following engineering steps would you do next if you wanted to build a new prototype?

• Ask

• Imagine

• Create

• Improve