2nd Materials Quiz

1. If it’s really hot and sunny outside, you probably want to wear clothes that are...

• waterproof.
• heat-trapping.
• see-through.
• absorbent

2. Why are oven mitts NOT made out of metal?

• Metal lets the heat through to your hand.
• Metal is too expensive.
• Metal is too heavy.
• Metal isn’t very comfortable.

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3. Why do you need a metal pan to fry an egg on a hot sidewalk?

• The pan will keep the egg from getting dirty.
• The pan makes it easier to serve the egg.
• The pan conducts heat from the sidewalk.
• The pan absorbs heat from the sun.

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4. What do popsicles and plastic toys have in common?

• Both of them can get very cold.
• Both of them are liquids.
• Both of them are made out of water.
• Both of them can be melted into shapes.

5. Why was it easier to make plastic toys instead of wooden toys?

• Plastic doesn’t need to be carved by hand.
• Plastic doesn’t grow in the ground.
• Plastic can be painted different colors.
• Plastic doesn’t have bark that needs to be removed.

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6. Scientists invent new materials so that…

• tell each other about them.
• invent things to solve problems.
• store the materials in their laboratories.
• do as many experiments as possible.

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7. A ________ can be built out of smaller pieces of _____.

• House…………… wood
• Skyscraper……… concrete and steel
• Wall……………… brick
• All of the above

8. If you are designing winter boots, which material properties would you choose? Choose as many properties as you want.

• soft

• stiff

• heat-trapping

• waterproof

• heavy

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What’s so special about plastic? Why are so many toys made out of plastic? A lot of toys are made out of plastic because…

• it is cheap

• it is easy to produce

• all of the above

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What are two ways you could change the properties of paper to make it stronger? You could make paper stronger by…

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