Engineering Materials Review

Which of these correctly describes a constraint?

• a specific property of a material

• a requirement that must be met

• an advantage that benefits performance

• a limit placed on the engineering process

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In designing a new kind of pretzel snack, which of these might be a constraint for an engineer?

• the snack must be low-calorie

• the snack must contain at least 2g of fiber

• the snack must be triangle-shaped

• the snack cannot be made using tree nuts

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NGSS.MS-ETS1-1

In engineering, the term "criteria" refers to...

• money that is allowed to be spent on a project

• tests that are performed to measure performance

• requirements that must be met by a design

• positive reviews for a product

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A new kind of sponge is being designed by a team of engineers. Which of these might be a criterion for this project?

• There is a budget of $50,000 to spend

• The project has a deadline of January 1, 2024

• The sponge must hold at least three times its mass in water

• Styrofoam cannot be used to make the sponge

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Which of these is the first step in the engineering process?

• promote the completed product with advertising

• fully understand the problem that needs to be solved

• obtain materials for creating the product or design

• test the product in different types of conditions

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True or False: Constraints always make the engineering process more difficult.

• True

• False

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Which of these is considered a porous material?

• aluminum foil

• paper

• stainless steel

• hard plastic

True or False: When testing a design, engineers may add new criteria that were not originally stated.

• True

• False

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The goal of engineering new materials is to create materials with properties that are ______ the original materials.

• better than

• the same as

• unrelated to

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Which of these properties would be considered useful for designing an athletic sneaker?

• very low melting point

• low flexibility

• high flexibility

• very high weight

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