Natural Resources and Synthetic Materials Quiz

Steel has been made from iron ore since ancient times. Modern steel is stronger and more resistant to rust. What is the most likely reason that this change has occurred?

• Modern iron is more pure.

• Scientists have made iron stronger.

• Engineers have improved the method of making steel.

• Ancient iron was obtained from different natural resources.

A natural resource is best defined as any naturally occurring material that is ________.

• used by people

• mined from Earth

• unlimited in quantity

• left untouched in nature

Which of these is a synthetic material that is made from a renewable natural resource and can be used for fuel?

• nylon

• ethanol

• gasoline

• aluminum

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Which statement describes how natural resources benefit humans?

• Natural resources exist in nearly unlimited supplies.

• Natural resources can be used to make synthetic materials to meet our needs.

• Natural resources are better for the environment than synthetic materials.

• Natural resources are the same everywhere and so they don’t need to be shipped around the world.

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A material is hard and conducts heat and electricity well. Which of these could be the material?

• a sugar

• an acid

• a metal

• a plastic

Copper is the metal most often used to make electrical wires. All of these properties make copper well suited for this purpose, except that it ________.

• bends easily

• is not brittle

• reacts with oxygen

• conducts electricity well

The chemicals that make up petroleum can undergo a series of chemical reactions that result in very long molecules. Which synthetic product would be made of such molecules?

• fuels

• foods

• fabrics

• explosives

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Energy is produced when a fuel, such as wood or gasoline, is burned. Which property does a fuel need to have?

• solid

• flammable

• low density

• strong odor

Bronze is made by combining copper and tin. Bronze has several useful properties that neither of its components has. What must happen before bronze can be produced?

• Copper and tin are recycled.

• Bronze is used by consumers.

• Bronze is distributed to factories to be made into products.

• Copper and tin are obtained from natural resources or recycled materials.

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Bread dough contains yeast, which releases carbon dioxide gas (CO2) when it feeds on the sugar and starch present. Why is yeast added to bread dough?

• to add flavor from the CO2 to the bread

• to make the dough rise so the bread is fluffy

• to keep the bread from having too much sugar

• to keep the bread from having too much starch

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