what do you mean by convection and radiation?
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1) Convection:
Convection is the heat transfer due to bulk movement of molecules within fluids such as gases and liquids, including molten rock. Convection takes place through advection, diffusion or both.
2) Radiation:
The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
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a student or a teacher
of which class
7 th
actually tomorrow is my exam of science
may i know ur name
in which school do u study
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