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Heat Transfer
by Ron Kurtus (30 May 2001)
The speed of a materials molecules or atoms determines their kinetic energy. Heat is the total kinetic energy of an object. That heat can be transferred to other materials through conduction, convection and/or radiation.
Questions you may have about this are:
· How is heat transferred by conduction? ...
· How is heat transferred by radiation?
This lesson will try to answer those questions about heat transfer. ...
Conduction
Heat energy can be transferred from one substance to another when they are in direct contact. ... The heat can also travel through a material as one molecule transfers energy to a neighboring one. This type of heat transfer is called conduction. ...
Some materials are better conductors of heat than others. For example, metals are a good conductors of heat, while a material like wood isnt. ... Good conductors of electricity are often good conductors of heat.
Since the atoms are closer together, solids conduct heat better than liquids or gasses. This means that two solid materials in contact would transfer heat from one to the other better than a solid in contact with a gas or a gas with a liquid. ... It transfer heat over a distance faster than by conduction, but ultimately conduction must transfer the heat from the gas to the other object.
Radiation
A third method to transfer heat is by radiation. ... Electric heaters with the shiny reflector use radiation to heat.
Approximate Word count = 1189
Approximate Pages = 4.8
(250 words per page double spaced)
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