10 Major Differences Between Heat And Temperature

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Get to understand the basic difference between heat and temperature. The basis of comparison include: description, expression, international standard unit of measurement, working ability, negative values, symbol, device used in measuring and nature.

What Is Heat?

In thermodynamics, Heat is energy that flows between a system and its environment by virtue of temperature difference between them. The mechanism includes conduction, through direct contact of immobile bodies, or through a wall or barrier that is impermeable to matter or radiation between separated bodies. When there is a suitable path between two systems with different temperatures, heat transfer occurs necessarily, immediately and spontaneously from the hotter to the colder system. As a form of energy, heat has the unit joule (J) in the international system of units (SI). Here is a highlight description of heat as a form of energy:

  1. Heat is energy that flows between a system and its environment by virtue of temperature difference between them.
  2. In thermodynamic, heat is taken to be the total kinetic energy and potential energy obtained by molecules in object.
  3. Heat being a form of energy, its standard unit of measurement is Joule (J). It can also be measured in calorie (cal) and related to joule according to: 1cal= 4.186 Joules.
  4. Heat will always travel from a hotter region to a cooler region.
  5. Heat is measured by a device known as Calorimeter.
  6. Heat is represented by Symbol of letter (Q).
  7. Heat has the working ability.
  8. The thermal energy of a system cannot have negative values.

What Is Temperature?

Temperature is a physical quantity expressing hotness or coldness of a substance. It is measured with a thermometer calibrated in one or more temperature scales. The most commonly used scales are the Celcius scale, Fahrenheit scale and Kelvin scale. The Kelvin is the unit of temperature in the international system of units (SI) in which, temperature is one of the seven fundamental base quantities. Temperature is important in all fields of natural science, including physics, chemistry, Earth science, medicine and biology, as well as most aspects of daily life. Here is a highlight description of temperature:

  1. In thermodynamics, temperature is a measure of intensity of hotness or coldness of an object.
  2. In thermodynamics, temperature is taken to be the average kinetic energy of molecules in a substance.
  3. Temperature being a measure of intensity, its standard unit of measurements is Kelvin; however, it can be measured in Celsius or Fahrenheit.
  4. Temperature rises when an objected is heated and falls when the object is cooled.
  5. Temperature is measured by a device known as thermometer.
  6. Temperature is represented by symbol of letter (T).
  7. It does not have the working ability; it is exclusively used to measure the intensity or extent of heat.
  8. The temperature of an object can take negative values depending on the unit system used to measure the temperature.

Difference Between Heat And Temperature In Tabular Form

BASIS OF DIFFERENCE HEAT TEMPERATURE
Description In thermodynamics, heat is energy that flows between a system and its environment by virtue of temperature difference between them.   In thermodynamics, temperature is a measure of intensity of hotness or coldness of an object.  
Expression In thermodynamic, heat is taken to be the total kinetic energy and potential energy obtained by molecules in object.   In thermodynamics, temperature is taken to be the average kinetic energy of molecules in a substance.  
Standard Unit of Measurement Heat being a form of energy, its standard unit of measurement is Joule (J). it can also be measured in calorie (cal) and related to  joule according to: 1cal= 4.186 Joules.   Temperature being a measure of intensity, its standard unit of measurements is Kelvin; however, it can be measured in Celsius or Fahrenheit.  
Nature Heat will always travel from a hotter region to a cooler region.   Temperature rises when an objected is heated and falls when the object is cooled.  
Measurement Device Heat is measured by a device known as Calorimeter.   Temperature is measured by a device known as thermometer.  
Symbol Heat is represented by Symbol of letter (Q).   Temperature is represented by symbol of letter (T).  
Working Ability Heat has the working ability.    It does not have the working ability; it is exclusively used to measure the intensity or extent of heat.  
Negative Values The thermal energy of a system cannot have negative values.   The temperature of an object can take negative values depending on the unit system used to measure the temperature.  

Summary

Heat is energy that flows between a system and its environment by virtue of temperature difference between them. It is measured by a device known as Calorimeter. Temperature on the other hand, is a measure of intensity of hotness or coldness of an object. It is measured by a device known as thermometer.