Convection is the process of heat transfer by the bulk movement of molecules within fluids such as gases and liquids. The initial heat transfer between the object and the fluid takes place through conduction, but the bulk heat transfer happens due to the motion of the fluid.
The heat source and liquid are needed to form convection current therefore, heat transfer can be conducted.
Convection occurs in the atmosphere.
Magma is considered as the fluid, while the core of the earth is called as the heat source.
Answers & Comments
Answer:
Convection is the process of heat transfer by the bulk movement of molecules within fluids such as gases and liquids. The initial heat transfer between the object and the fluid takes place through conduction, but the bulk heat transfer happens due to the motion of the fluid.