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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Convection is
A
heat transfer by waves
B
heat transfer in fluids and gases
C
heat transfer by direct contact
D
heat transfer by insulation
Explanation: 

Detailed explanation-1: -What is Convection? 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.

Detailed explanation-2: -Convection is the movement of heat by a fluid such as water or air. The fluid (liquid or gas) moves from one location to another, transferring heat along with it. This movement of a mass of heated water or air is called a current. Radiation is the transfer of heat by electromagnetic waves.

Detailed explanation-3: -Convection happens in fluids (liquid and gases). The heat energy moves the material in liquids and gases because when they all are heated they expand and become less dense. For the formation of convection currents it is important for the particles to move freely upto a certain extent.

Detailed explanation-4: -Convection is the movement within a liquid or gas driven by differences in temperature.

Detailed explanation-5: -Convection. The first type of heat transfer is convection. Convection is heat flux through liquids and gases.

There is 1 question to complete.