Convection
Definition: Transfer of thermal energy by means of currents in a fluid.
Fluid=liquids/gases
Heat is transmitted from one place to another by the movement of heated particles of a fluid.
Why is it fluid only?
In liquids and gases, the molecules are free to move about, unlike the molecules in solids which can only vibrate at fixed positions.Convection cannot take place in solid because the particles of solid are strongly bonded together and not allowed to flow.
Rmb: Solids can only transfer heat from one region to another through conduction and radiation due to its kinetic model.
Fluid=liquids/gases
Heat is transmitted from one place to another by the movement of heated particles of a fluid.
Why is it fluid only?
In liquids and gases, the molecules are free to move about, unlike the molecules in solids which can only vibrate at fixed positions.Convection cannot take place in solid because the particles of solid are strongly bonded together and not allowed to flow.
Rmb: Solids can only transfer heat from one region to another through conduction and radiation due to its kinetic model.
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