chapter 6 heat and heat technology Flashcards
tempreature
a measure of how hot something is
thermal expansion
an increase in the size of a substance in response to an increase in the tempreature of the substance
absolute zero
the temp. at wich molecular energy is at a minimun
heat
the energy transfered between objects that are at difdfrent temp.
thermal energy
the kinetic energy of a substance’s atoms
thermal conduction
the ttransfer of energy as heat through a material
trhermal conductor
a aterial through wich energy can be tranfered as heat
thermal insulator
a material that reduces or prevents the transfer of heat
convection
thetrnsfer of thermal energy by the circulation or movement of a liquid or gas
radiation
the transfer of energy as electromagnetic waves
specific heat
the qunaity of heat required to raise a unti mass of homogens material 1 k or 1degreeeC in a specified was given constant pressure and volume
states of matter
the physical form of matter wich include solid, liquid, and gas
change of state
the change of a substance from one physical state to another
insulation
a substance that reduces the transfer of eectric
heat engine
a machine that transforms heat into mechanical energy
