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Heat

en.wikipedia.org/wiki/Heat

It regards quantity of energy transferred as heat as a primitive concept ...

Heat Energy - definition of heat energy - Physics - About.com

physics.about.com/od/glossary/g/heat.htm

Definition: Heat energy (or just heat) is a form of energy which transfers among particles in a substance (or system) by means of kinetic energy of those particle.

heat energy - Dictionary Definition : Vocabulary.com

www.vocabulary.com/dictionary/heat energy

(physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs ...

Heat - BrainPOP

www.brainpop.com/science/energy/heat/

In this educational animated movie about Science learn about temperature, energy, melting, Celsius, Fahrenheit, Kelvin, and thermodynamics.

What is Heat? - The Physics Classroom

www.physicsclassroom.com/class/thermalP/Lesson-1/What-is-Heat

A measure of the average kinetic energy of the particles in a sample of ... In this sense, heat is simply the transfer of energy from a hot object to a colder object.

Heat energy - definition of heat energy by The Free Dictionary

www.thefreedictionary.com/heat energy

Noun, 1. heat energy - a form of energy that is transferred by a difference in temperature. heat · energy, free energy - (physics) a thermodynamic quantity ...

heat | physics | Britannica.com

www.britannica.com/science/heat

Sep 10, 2014 ... Energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are ...

Heat - HyperPhysics

hyperphysics.phy-astr.gsu.edu/hbase/thermo/heat.html

Heat may be defined as energy in transit from a high temperature object to a lower temperature object. An object does not possess "heat"; the appropriate term ...

Examples of Heat Energy - YourDictionary

examples.yourdictionary.com/examples-of-heat-energy.html

Heat energy is the term that we use to describe the level of activity for the molecules in an object. An object with molecules that are very excited and zip around ...

What is heat or thermal energy? - eSchooltoday

www.eschooltoday.com/energy/kinds-of-energy/what-is-thermal-energy.html

Heat (Thermal energy). Matter is made up of particles or molecules. These molecules move (or vibrate) constantly. A rise in the temperature of matter makes the ...

Answers
Thermal energy is generated and measured by heat of any kind. It is caused by the increased activity or velocity of molecules in a substance, which in turn causes temperature to rise accordingly.
There are many natural sources of thermal energy on Earth, making it an important component of alternative energy.