DOL - 5/13 - Engineering Process

Why is it important to brainstorm ideas during the engineering design process?

• To limit creativity and innovation, discourage collaboration, and hinder problem-solving and solution effectiveness.

• To explore multiple possibilities and perspectives, encourage creativity, collaboration, and innovation, and improve problem-solving and solution effectiveness.

• To focus on a single possibility and perspective, discourage creativity and collaboration, and hinder problem-solving and solution effectiveness.

• To avoid exploring possibilities and perspectives, discourage creativity and collaboration, and hinder problem-solving and solution effectiveness.

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Why is it important to test and redesign during the engineering design process?

• To ignore potential problems

• To waste time and resources

• To maintain the status quo

• To identify and fix flaws or errors in the design and make necessary improvements.

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A rocket is launched from Earth and begins accelerating upward into space. According to Newton’s Third Law, which of the following best explains why the rocket is able to lift off the ground?

• A. The rocket pushes against the air, and the air pushes back with an equal and opposite force.

• B. The rocket’s engines push exhaust gases downward, and the gases exert an equal and opposite force upward on the rocket.

• C. Gravity pulls the rocket upward, and the Earth pushes downward with an equal and opposite force.

• D. The rocket creates lift by having a higher pressure underneath its wings than above them.

Two rockets, Rocket A and Rocket B, are launched with the same amount of fuel. Rocket A has a greater mass than Rocket B. Assuming the engines produce the same amount of thrust (force), which rocket will accelerate faster, and why?

• A. Rocket A, because a greater mass results in greater acceleration when force is constant.

• B. Rocket B, because with the same force, a smaller mass results in greater acceleration.

• C. Both rockets will accelerate at the same rate, because they have the same force.

• D. Rocket B, because less fuel means it has to go faster to reach space.

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An aerospace engineer is designing a spacecraft that will travel through deep space after its engines shut off. Based on Newton’s First Law, which design feature would best help the spacecraft maintain a constant velocity in the absence of external forces?

• A. Large wings to continue generating lift after engine cutoff

• B. A lightweight frame to allow for faster acceleration during launch

• C. A high-friction coating to reduce resistance from space particles
  

• D. A balanced, symmetrical shape to minimize unbalanced forces during coasting

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Label the steps of the Engineering Design Process diagram with the correct descriptions.

a

b

c

d

e

f

g

h

Define the Problem

Based on results and data, make changes.

Do Background Research

Specify Requirements

Brainstorm, Evaluate, & Choose Solution

Communicate Results

Test Solution

Develop Prototype/Model

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