Heat vocabulary
Terms
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- heat
- expressed in joules or calories
- thermal energy
- expressed in joules
- direction of heat transfer
- higher temperature to lower temperature
- what 2 things determine the amount of thermal energy
- temperature & how much of the substance you have
- conductor
- conducts thermal energy well
- insulator
- does not conduct thermal energy well
- convection
- transfer of thermal energy by the movement of a liquid or gas
- convection current
- circular motion of liquids or gases due to density differences caused by temp. differences
- radiation
- transfer of energy through matter or space as electromagnetic waves
- greenhouse effect
- warming due to trapped radiation by atmosphere
- thermal conductivity
- the rate at which a substance conducts thermal energy
- specific heat capacity
- the amount of heat energy needed to change the temperature of 1 kg of a substance by 1 degree celsius
- calorimeter
- a device used to determine the specific heat capacity of a substance
- calorie
- the amount of energy needed to change the temperature of 0.001 kg of WATER by 1 degree celsius
- kilocalorie
- 1000 calories, used on food labels, Calorie (capital C)
- Difference between temp. and thermal energy
-
temp = average kinetic energy
thermal energy = the total energy of a substance - temperature
- expressed in degrees fahrenheit, degrees celsius, or Kelvin