Heat transfer Flashcards
law of conservation of energy
energy can not be created or destroyed just transferred (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 beneath a solid object
convection
heat transfer into or out of fluids
radiation
heat transfer due to packets of energy called photons that can travel through many substances, even empty spaces
insulator
A material though which energy ( electrical, thermal, sound) cannot be easily transferred
conductor
A material though which energy ( electrical, thermal, sound) can easily be transferred.
temperature
the measure of the average speed of all particles
thermal energy
the total energy of all the particles in an object.