I know Im Repeating The Question .. But I Really Need Help . x

What Is Conduction , Convection and radiation ?

http://www.mansfieldct.org/Schools/MMS/staff/hand/convcondrad.htm

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Conduction, convection, and radiation are three different methods of heat transfer.

1. Conduction: Conduction is the transfer of heat through direct contact between objects or substances that are at different temperatures. When two objects with different temperatures touch each other, heat is transferred from the hotter object to the colder one until they reach thermal equilibrium. For example, if you touch a metal spoon that has been sitting in a hot pot, the heat from the spoon will transfer to your hand through conduction.

2. Convection: Convection is the transfer of heat through the movement of a fluid (liquid or gas). When a fluid is heated, it becomes less dense and rises, while the cooler fluid sinks to take its place. This creates a convection current that helps distribute heat. A common example of convection is the way a pot of boiling water heats the air above it. The heated air rises, and the cooler air moves in to replace it, creating a cycle.

3. Radiation: Radiation is the transfer of heat in the form of electromagnetic waves. Unlike conduction and convection, radiation does not require a medium to transfer heat. It can occur in a vacuum, such as in space. The primary source of radiation is the sun. Heat from the sun travels to the Earth through space as electromagnetic waves. Similarly, heat radiates from a fire or a hot object, warming the surroundings without direct contact.

If you want to learn more about these concepts, you can refer to physics textbooks or reputable online resources that explain the principles and provide examples for each type of heat transfer.