Which term describes a material that does not conduct thermal energy well?

Which term describes a material that does not conduct thermal energy well?

• A. Thermal Conductor
• B. Thermal Insulator
• C. Conduction
• D. Convection

Answer: (B)

Thermal conductivity is the idea here: it describes how easily heat can move through a material. A material that does not conduct thermal energy well has low thermal conductivity, so it acts as an insulator. Thermal insulators slow down or block heat flow, which is why they’re used to keep warmth in a building, protect delicate items, or keep food from cooling too quickly. The other terms aren’t describing a material’s ability to resist heat transfer: a thermal conductor is a material that transfers heat well, while conduction and convection refer to methods by which heat can move (through direct contact or fluid movement), not to a property of a material.

Thermal conductivity is the idea here: it describes how easily heat can move through a material. A material that does not conduct thermal energy well has low thermal conductivity, so it acts as an insulator. Thermal insulators slow down or block heat flow, which is why they’re used to keep warmth in a building, protect delicate items, or keep food from cooling too quickly. The other terms aren’t describing a material’s ability to resist heat transfer: a thermal conductor is a material that transfers heat well, while conduction and convection refer to methods by which heat can move (through direct contact or fluid movement), not to a property of a material.