​The transfer of energy from one particle of matter to another particle of matter.

​​Conduction​

​The transfer of thermal energy by the movement of a fluid (a gas or a liquid).

​​Convection​

​The transfer of energy by electromagnetic waves (light energy waves).

Radiation​

​Heat Transfer Examples

Conduction

Energy transfer between particles of matter that touch directly.

• As heat is added to a material, the particles begin to vibrate more which means kinetic energy increases.

• Conduction happens through direct touch/contact between objects.​

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Convection

Heat transfer through movement of fluids.

• Fluids are materials that can flow, like liquids and gases.

• The particles at the bottom heat up and become less dense. This causes them to rise and push the colder and denser molecules down.

• This movement is called a Convection Current​

Radiation

​Heat transfer by electromagnetic waves.

• The only form of heat transfer that does not require matter.

• Heat you can feel but do not always see.

• This is how we receive heat from the sun since it is able to pass through the vacuum of space where there is not matter present for it to travel through.

According to the Law of Conservation of Energy, energy cannot be created or destroyed.

It can only be moved between objects or changed into another form of energy.

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​Energy is either transferred or transformed.

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