Thermodynamics (HSC SSCE Physics): Flashcards

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Energy Transfer Models
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Direction of natural heat flow

From high temperature to low temperature regions

Three mechanisms of heat transfer

Conduction, convection, and radiation

Definition of conduction

Heat transfer via particle collisions, no overall movement

Symbol for thermal conductivity

kk

Unit of thermal conductivity

W m1 K1\text{W m}^{-1} \text{ K}^{-1}

Thermal conductivity equation for rate of heat flow

Qt=kAΔTd\frac{Q}{t} = \frac{kA\Delta T}{d}

Why metals conduct heat so well

Delocalised electrons rapidly transfer kinetic energy

Definition of convection

Heat transfer through bulk movement of particles in fluids

Definition of radiation

Heat transfer via electromagnetic waves, no medium needed

What all objects above absolute zero emit

Electromagnetic radiation

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