Thermal Conductors and Insulators (Grade 10 NSC Matric Physical Sciences): Flashcards

Material that allows heat energy to move through it easily

Material that does not allow heat energy to transfer easily

$\text{W·m}^{-1}\text{·K}^{-1}$ (watts per metre-kelvin)

Better heat conduction

Silver (429 $\text{W·m}^{-1}\text{·K}^{-1}$)

Air (0.024 $\text{W·m}^{-1}\text{·K}^{-1}$)

Conducts heat well and spreads it evenly

Don't conduct heat well, keeping handles cool

Insulate and prevent heat escape, saving energy

Brick better - lower conductivity (0.69 vs 0.9-2)