Chapter 3 Properties of Materials

Engineers usually have ______________ design goals.

• one

• multiple

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A __________ is something you can see, smell, hear, feel or taste about an ingredient. It can also be something an ingredient can do.

• property

• solid

• dog

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What might be good properties of hair gel?

• smelly and makes hair fall out

• makes your hair hurt

• looks shiny and makes good spikes

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What properties would we want glue to have if we are using it for construction projects like building a house out of craft sticks? Chose more than one answer.

• property of being strong

• property of being thick

• property of being colored

• property of being sticky

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While each step in the design cycle is important, engineers __________ follow the same exact steps in the same order.

• always

• don't always

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When testing glue strength, partner A put their paper clip into a tiny bit of glue, but partner B put their paper clip into a lot of glue.

Would the tests be fair?

Why?

When we combine 2 or more ingredients, the mixtures ____________________________________________.

• can take on the properties of those ingredients.

• can not take on the properties of those ingredients.

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Mixtures may have _________________ of the properties of their ingredients.

• one

• a combination

• none

Engineers often need to ________ their plans and ________ some steps over again as they go along based on what they learn.

• heat and cool

• destroy and take out

• revise and repeat

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