•Then there are materials called "insulators" that do not allow energy to pass through easily. These materials include plastic, cork, wood, Styrofoam, and rubber. ... A material that does not let heat and electricity travel through it easily is known as an insulator.
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Explanation:
•Then there are materials called "insulators" that do not allow energy to pass through easily. These materials include plastic, cork, wood, Styrofoam, and rubber. ... A material that does not let heat and electricity travel through it easily is known as an insulator.