week 3 Flashcards
what is heat, and what does it result in
form of energy transferred from one system to another, which results in temperature differences
what is thermal energy associated with (4)
translation
rotation
vibration
electronic states of the atoms and molecules
what is internal energy
the sum of all the microscopic forms of energy of a system
what are the 3 modes of heat transfer
conduction
convection
radiation
what is conduction
heat transfer in a solid or a stationary fluid gas or liquid due to RANDOM MOTION of ATOMS/molecules/electrons
what is convection
heat transfer between solid/gas/liquid that is in motion
what is radiation and what does it cause
energy emitted by matter in the form of electromagnetic waves or photons
this causes changes in electronic configurations of atoms and molecules
where does heat travel from, hot to cold or cold to hot?
heat flows from higher temp (hot) to a lower temp (cold)
