heat transfer Flashcards
law of conservation of energy
energy cannot be created or distroyed just transformed ( under normal conditions )
heat
thermal energy that flows due to a difference in tempature. 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 transfer due to packs 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 easly transferred
conductor
a material through which energy ( electrical, thermal or sound ) can be easly transferred
tempature
the measure of the average speed or all particles
thermal energy
the todal energy of all particles in an object