Which statement best describes an insulator?

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Multiple Choice

Which statement best describes an insulator?

Insulators resist energy flow. An insulator is a material that does not allow heat or electrons to move through it easily, so it slows down both heat transfer and electrical current. That’s why materials like plastic, wood, or foam are used to keep heat in or out and to protect against shocks. In contrast, a substance that allows heat and electricity to pass through it would be a conductor, not an insulator. A substance that changes state easily relates to phase changes like melting or boiling, and a substance that stores heat energy describes thermal mass or high specific heat, not insulation.

Insulators resist energy flow. An insulator is a material that does not allow heat or electrons to move through it easily, so it slows down both heat transfer and electrical current. That’s why materials like plastic, wood, or foam are used to keep heat in or out and to protect against shocks. In contrast, a substance that allows heat and electricity to pass through it would be a conductor, not an insulator. A substance that changes state easily relates to phase changes like melting or boiling, and a substance that stores heat energy describes thermal mass or high specific heat, not insulation.

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