Understanding Materials and Their Combinations

What materials were used to make the desk mentioned in the text?

• Wood and plastic

• Metal and glass

• Wood and metal

• Plastic and glass

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What does it mean to combine materials?

• To separate them

• To join two or more things into one unit

• To throw them away

• To paint them.

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Which material is described as thin, flexible, and strong?

• Wood

• Metal

• Rope

• Plastic

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What can be used to join pieces of wood together?

• Glue

• Metal clips and screws

• Tape

• String

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What is one reason engineers combine materials?

• To make them heavier

• To improve a design

• To make them colorful

• To make them expensive.

What did materials engineers discover about glass?

• It can be made into food

• It can be made stronger with chemicals

• It can be used as a blanket

• It can be turned into metal.

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Why is thin, strong glass important for mobile phones?

• It makes them heavier

• It makes them colorful

• It is used for the screens

• It is used for the battery.

What is a benefit of combining materials?

• It makes them invisible

• It can create new materials

• It makes them taste better

• It makes them disappear.

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What do engineers sometimes develop when combining materials?

• New colors

• New materials

• New animals

• New planets

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What is the purpose of adding chemicals to glass?

• To make it taste sweet

• To make it stronger

• To make it invisible

• To make it heavier

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