Exploring Thermal Conductors and Insulators

What is the primary function of thermal conductors and insulators?

• To control the flow of light energy

• To control the flow of sound energy

• To control the flow of thermal energy

• To control the flow of electrical energy

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Which material is generally a poor conductor of thermal energy?

• Copper

• Plastic

• Metal

• Aluminum

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Why are metals excellent conductors of thermal energy?

• Because their atoms are closely packed together

• Because they are lightweight

• Because they have a lot of air pockets

• Because they are flexible

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What happens when you touch a metal object on a cold day?

• It feels warm because it absorbs heat from your hand

• It feels cold because it conducts thermal energy away from your hand

• It feels the same as the surrounding temperature

• It feels hot because it retains heat

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What is the primary characteristic of thermal insulators?

• They are excellent conductors of thermal energy

• They are always solid

• They block the flow of thermal energy

• They are made of metal

Why are jackets effective in keeping us warm?

• Because they have a lot of air pockets

• Because they are waterproof

• Because they are made of metal

• Because they are heavy

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What is a Radiant Barrier used for?

• To conduct electricity

• To absorb sound

• To reflect radiation and block thermal energy

• To conduct thermal energy

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What is the best insulator known to man?

• Metal

• Plastic

• Vacuum

• Wood

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Why is a thermos effective in keeping beverages hot or cold?

• Because it is made of metal

• Because it has a double-walled system with a vacuum

• Because it is lightweight

• Because it is flexible

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Why should pipes be insulated in winter?

• To make them more flexible

• To make them more durable

• To prevent the water inside from freezing and causing bursts

• To prevent them from overheating

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