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What is the difference between heat and temperature?

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Question ajoutée par Samar Saleh , Community Manager , Bayt.com
Date de publication: 2014/01/15
Mohamed Khedr
par Mohamed Khedr , Researcher , Helmholtz Center Munich

Heat is a form of energy (Such as Light, Electricity ...etc.) it can be transformed into other forms of energy, and it's measured in Joules.

While Temperature is just a MEASURE/SCALE of the speed of atoms & molecules of a substance (It's just a number not energy!) and it's expressed as degrees (Celusis, Kelvin or Fahrinhiet).

 

As Mr. Helal pointed out; when you heat a substance, either of two things can happen: The temperature of the substance can rise or the state of substance can change.

 

Temperature to heat is the same like:

ampere to electricity, candela to light, decibel to sound ...etc.

Heat is the amount of energy in a system,

 

Temperature is the measure of the average molecular motions in a system and simply has units of (degrees F, degrees C, or K)

 

 

Heat is thermal energy where temperature is a measurement of how hot or cold something is when it is measured on a scale.

Another difference is that heat is an extensive property which means it does not depend on the amount of the substance that is present as compared to temperature, which is an intensive property meaning that the substance that is present will not change the specific characteristic.

Mahmoud Mostafa Abdelhamid
par Mahmoud Mostafa Abdelhamid , ENPI – CBC MED ALGAE Project , Faculty of Science, University of Alexandria

There is a fundamental difference between temperature and heat. Heat is the amount of energy in a system. The SI units for heat are Joules. A Joule is a Newton times a meter. A Newton is a kilogram-meter per second squared. Heat is transferred through radiation, conduction and convection. The amount that molecules are vibrating, rotating or moving is a direct function of the heat content. Energy is transported by conduction as molecules vibrate, rotate and/or collide into each other. Heat is moved along similar to dominos knocking down their neighbors in a chain reaction. An increase of electromagnetic radiation into a system causes the molecules to vibrate, rotate and/or move faster. With convection, higher energy molecules are mixed with lower energy molecules. When higher energy molecules are mixed with lower energy molecules the molecular motion will come into equilibrium over time. The faster moving molecules will slow down and the slow moving molecules will speed up. Temperature is the MEASURE of the AVERAGE molecular motions in a system and simply has units of(degrees F, degrees C, or K). Notice that one primary difference between heat and temperature is that heat has units of Joules and temperature has units of (degrees F, degrees C, or K). Another primary difference is that energy can be transported without the temperature of a substance changing (e.g. latent heat, ice water remains at the freezing point even as energy is brought into the ice water to melt more ice). But, as a general statement (ignoring latent heat), as heat energy increases, the temperature will increase. If molecules increase in vibration, rotation or forward motion and pass that energy to neighboring molecules, the measured temperature of the system will increase.

Peter Abd El Malak
par Peter Abd El Malak , Senior Executive Provider Network & Client Relations , Health 360 Ancillary Sevices W.L.L

TEMPERATURE is the unit to express heat or cold, so high degrees are defined as HOT and low degrees are defined as COLD  

Heat is that thing you feel with your hands or body so it directly means a high degrees of  temperature.

Sourav Ganguly
par Sourav Ganguly , Marketing Coordinator/desinging , P.M.Control Equipment Pvt. Ltd

Its a very common question. Heat is a form of energy for which temperature is come to our consideration.

Heat is a cause and the effect is temperature.

Without knowing heat you can't define Temperatue.

Thats why0°C Ice is different from0°C water. Here Temp is same but Heat is the reason for this two different phases.

 

عبد السلام هلال
par عبد السلام هلال , TECHNIQUE EDUCATION , EDUCATION

heat is the quantitée of Energy has made ​​a body (measured quantum) which has affect to increased agitation of its molecules

the temperature is variable accompanying the heat change for a corp

such us  these two values ​​are not always proportional

for example melting point of a body that when we have added heat ,temperature does not change until full transformation of matter from solid to liquid

more clearly passing ice to water temperature remains0 degrees celcius until full melting of ice

these variable are thermodinamiques greatness that has a necessary science por a chemist or physicist and other scientific areas

 

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