Which term describes a property that prevents the passage of heat or electricity?

Which term describes a property that prevents the passage of heat or electricity?

• A. Insulating
• B. Polymerize
• C. Micromechanical
• D. Obliterating

Answer: (A)

The property that prevents the passage of heat or electricity is insulating. When a material is insulating, it resists energy flow. For heat, this means low thermal conductivity, so heat is not easily transferred through the material. For electricity, high resistivity means electrons don’t move easily, blocking current. That’s why materials like foam, fiberglass, rubber, and plastic are used to keep heat in or out and to insulate electrical wires. The other terms don’t describe energy transfer: polymerize is about forming polymers, micromechanical refers to tiny-scale mechanics, and obliterating means destroying.

The property that prevents the passage of heat or electricity is insulating. When a material is insulating, it resists energy flow. For heat, this means low thermal conductivity, so heat is not easily transferred through the material. For electricity, high resistivity means electrons don’t move easily, blocking current. That’s why materials like foam, fiberglass, rubber, and plastic are used to keep heat in or out and to insulate electrical wires. The other terms don’t describe energy transfer: polymerize is about forming polymers, micromechanical refers to tiny-scale mechanics, and obliterating means destroying.