What must happen for heat to be transferred by convection

The heat transfer by convection requires a solid-fluid interface, a temperature difference between the solid surface and the surrounding fluid and a motion of the fluid. The process of heat transfer by convection would occur when there is a movement of macro-particles of the fluid in space from a region of higher temperature to lower temperature.

Explanation:

The liquid or gas must circulate to move the heat

Explanation:

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state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock