In the given picture, the burner is providing heat to start the convection.
• When the transferring of heat takes place through a liquid or gas by the hotter substance moving into a cooler region, the condition is termed convection.
• The transfer of heat associated with the movement, which takes place within a fluid because of the rising of the hotter substances combined with the sinking of the colder substances is convection.
• One of the examples of convection is the boiling of water. When boiling of water takes place, the heat moves from the burner into the pot and starts heating the water present at the bottom. The rising of the hot water takes place and the cooler water moves down to substitute it, resulting in a circular movement.
Thus, the given case is an example of convection, in which boiling of water is taking place, and the heat is provided by the burner to start the process of convection.
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