PLTW - Section 1 Practice Test

         1.  During the Instant Design Challenge, your team used the Design Process to create a paper airplane.

Identify the step of the Design Process that matches the following task—The team had to take design considerations into account, such as how far the plane should fly and where it should land.

• Define a Problem

• Generate Concepts

• Design a Solution

• Build and Test

• Evaluate Solution

As they create new airplane designs, aerospace engineers document their work.

Why is such documentation important? Select all that apply.

• To provide future historians artifacts to exhibit in museums.

• To know what worked and continue improving those designs.

• To avoid making the same mistakes again.

• To provide managers records for evaluating the progress of their workers.

Pet Widgets, Inc. has designed a new dog harness as an accessibility tool for people with visual impairments to work with guide dogs. Research among guide dog owners shows that they require a harness that:

Is a bright color

Has a sturdy walking handle

Has a sign that informs others that the animal is a service dog. 

Guide dog owners also prefer that the harness be comfortable for their animals and have a small pouch for holding items, such as keys and cell phones.

Which of the following designs best meets the design requirements?

• Design A

• Design B

• Design C

• Design D

When forming a team to solve a design challenge, why is it important to establish team norms before starting to work? Select all that apply.

• To encourage productivity of the team

• To decide who should do most of the work due to prior experience

• To define how the team will function

• To ensure that all team members are treated with respect and have a voice

Match the camber with to corresponding description.

• Symmetrical Camber

• Low Camber

• High Camber

Describe what happens to an airplane in flight when drag is greater than thrust.

• Plane rises

• Plane descends

• Plane accelerates

• Plane slows

Which of Newton’s Laws of Motion explains what is happening in this statement—An airplane accelerates because of the force of thrust.  

• Newton’s First Law

• Newton’s Second Law

• Newton’s Third Law

Which of Newton’s Laws of Motion explains what is happening in this statement—An airplane was at rest on the runway, waiting in line for the planes ahead of it to take off. The pilot turns on the jet engines and the plane begins moving forward on the runway. The plane changed from a state of rest to being in motion as a result of the force of thrust.

• Newton’s First Law

• Newton’s Second Law

• Newton’s Third Law

A military cargo plane is loaded with the maximum weight allowable for the flight. The cargo is heavier than what the pilot usually carries, so the pilot adjusts as follows:  

• The pilot flies slower to create less thrust and less lift

• The pilot flies slower to create more thrust and more lift

• The pilot flies faster to create less thrust and less lift

• The pilot flies faster to create more thrust and more lift

Name the motion illustrated by the aircraft image.

• Pitch

• Yaw

• Roll

• Bend