science chp5 Flashcards
temperature
a measure of how hot or cold something is
thermal expansion
an increase in the size of a substance in response to an increase in the temoerature
absolute zero
the temperature at which molecular energy is at minimum
heat
the energy transferred between objects that are at different temperature
thermal energy
the kinetic energy of a substances atoms
thermal conduction
the transfer of energy as heat through a material
thermal conductor
a material through which energy can be transferred by heat
thermal insulator
a material that reduces or prevents the transfer of heat
convection
the transfer of thermal energy by the circulation or movement
radiation
the transfer of energy as electromagnetic waves
specific heat
the quantity of heat required to raise a unit mass
states of matter
the physical forms of matter
change of state
the change of a substance from one physical form to another
insulation
a substance that reduces the transfer of electricity
heat engine
a machine that transforms heat into mechanical heat
