Energy and heat transfer Flashcards
(9 cards)
Law of Conservation of Energy
Energy cannot be created nor destroyed just transformed (under normal conditions).
Heat
Thermal energy that flows due to a difference in temperature. Heat flows from hot to cold.
Heat transfer
A method by which heat flows. Conduction Convection Radiation
Conduction
Heat transfer within or between solid objects.
Convection
Heat transfer into or out of fluids`
Radiation
Heat transferred due to packets of energy called photons that can travel through many substances, even empty space.
Insulator
A material through which energy (electrical, thermal, or sound) cannot be easily transferred
Conductor
A material through which energy (electrical, thermal, or sound) can be easily transferred
Temperature
The measure of the average speed of all particles