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"science ch16 vocab"

vocabulary for chapter 16

QuestionAnswer
heat the transfer of thermal energy from one object to another because of a temperature difference
temperature a measure of how hot or cold an object is compared to a reference point
absolute zero temperature of 0 k.
thermal expansion the increase in volume of a material due to a temperature increase
specific heat the amount of heat needed to raise the temperature of one gram of a material by 1 degree celcius
calorimeter instsrument used to measure changes in thermal energy.
conduction the transfer of thermal energy with no overall transfer of matter
thermal conductors a material that conducts thermal energy well
thermal insulator a material that conducts thermal energy poorly
convection the transfer of thermal energy when particles of a fluid move from one place to another
convection current occurs when a fluid circulates in a loop as it alternately heat up & cools down
radiation the transfer of energy by waves moving through space
thermodynamics the study of convections between thermal energy& other forms of energy
heat engine any device that converts heat into work
waste heat thermal energy that isnt converted into work
external combustion engine an engine that burns fuel outside the engine
internal combustion engine heat engine in which the fuel burns inside the engine
central heating system heats many rooms from one central location
heat pump a device that reverses that normal flow of thermal energy
refrigerant a fluid that vaporizes and condenses inside the tubing of a heat pump
Created by: ErinDelaney
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