heat transfer Flashcards
law of conservation of energy
energy cannot be created or 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 o fluids
radiation
heat transfer 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.
thermal energy
THe total energy of all particles in an object.