Conduction, Convection and Radiation Notes
Heat transfers in three ways: Conduction, Convection and Radiation.
conduction – the transfer of thermal (heat) energy from a warmer material to a
cooler material through direct contact (touching) Example: pot on a stove,
touching the burner
convection – the transfer of thermal (heat) energy through currents in liquids
and gases. Warm liquid and gases rise up and cooler liquids and gases sink.
Example: A two story house being hotter upstairs than down stairs.
radiation – the transfer of thermal (heat) energy through waves. Example: the
sun, microwave, fire
Heat Transfer
 Heat always moves from a warmer place to a cooler place.
 Hot objects in a cooler room will cool to room temperature.
 Cold objects in a warmer room will heat up to room temperature.
Conduction, Convection and Radiation Notes
Heat transfers in three ways: Conduction, Convection and Radiation.
conduction – the transfer of thermal (heat) energy from a warmer material to a
cooler material through direct contact (touching) Example: pot on a stove,
touching the burner
convection – the transfer of thermal (heat) energy through currents in liquids
and gases. Warm liquid and gases rise up and cooler liquids and gases sink.
Example: A two story house being hotter upstairs than down stairs.
radiation – the transfer of thermal (heat) energy through waves. Example: the
sun, microwave, fire
Heat Transfer
•
Heat always moves from a warmer place to a cooler place.
•
Hot objects in a cooler room will cool to room temperature.
•
Cold objects in a warmer room will heat up to room temperature.