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Phys Sci - Chap 16

vocabulary words

QuestionAnswer
Heat transfer of thermal energy from one object to another because of a difference in temperature
temperature measure of how hot or cold an object is compared to a reference point
absolute zero a temperature of 0 kelvins
thermal expansion increase in volume of a material when its temperature increases
specific heat the amount of heat needed to raise the temperature of one gram of a material by one degree Celsius
calorimeter instrument used to measure thermal energy released or absorbed during a chemical or physical change
conduction transfer of thermal with no overall transfer of matter, within a material or between materials that are touching
thermal conductor a material that conducts thermal energy well
thermal insulator a material that conducts thermal energy poorly
convection transfer of thermal energy when particles of a fluid move from one place to another
convection current circulation of a fluid in a loop as the fluid alternately heats up and cools sown
radiation transfer of energy by waves moving through space
thermodynamics study of conversions between thermal energy and other forms of energy
heat engine any device that converts thermal energy into work
waste heat thermal energy discharged into an area at a lower temperature without being converted into useful work
external combustion engine a heat engine in which the fuel burns outside the engine
internal combustion engine heat engine in which the fuel burns inside the engine
central heating system a heating system that heats many rooms from on central location
heat pump device that uses work to transfer thermal energy from a colder area to a warmer area
refrigerant fluid that vaporizes and condenses inside the tubing of a heat pump
Created by: msparks