CHE463_CONDUCTION_Week1_2

What property of a material defines its ability to conduct heat?

• Specific heat

• Thermal conductivity

• Density

• Thermal diffusivity

What happens to the rate of heat transfer if the thickness of a material is doubled, assuming all other factors remain constant?

• It doubles

• It halves

• It remains the same

• It increases fourfold

Which mode of heat transfer occurs through direct molecular interaction in solids?

• Conduction

• Convection

• Radiation

• Advection

In heat conduction, what does a negative temperature gradient indicate?

• Heat is being absorbed

• Heat is transferred towards higher temperature

• Heat flows in the direction of decreasing temperature

• No heat transfer occurs

Why does metal feel colder than wood at the same temperature?

• Metal has higher thermal conductivity

• Metal has lower thermal conductivity

• Metal has lower thermal conductivity

• Metal radiates more heat