Energy & Heat Transfer Flashcards
Law of conservation of energy
energy can neither be created nor destroyed - only converted from one form of energy to another.
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 transfers due to packets of energy called photons that can travel through many substance, even empty space
Insulator
A material through which energy (electrical, thermal or sound) cannot be easily transferred.
Conducter
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.