Heat Transfer Definitions Flashcards
absorb
to take in energy
condense
gas turn to liquid
conduction
the way heat travels through solids
conductor
a material which lets energy flow through it easily.
contract
get smaller
convection current
a current created by heat causing changes in the density of a fluid
emit
to give out energy
evaporate
liquid turns to a gas
expand
get bigger
fluid
a gas or a liquid
gas
particles that are spread out and not attached to each other
heat insulator
material that does not let heat energy flow through it easily
infrared radiation
a wave that can travel through transparent things and a vacuum
insulator
a material which does not let energy flow through it easily
joules
the units for measuring energy