How does convection heat transfer work, and what are some examples of it in action?

Convection heat transfer occurs when heat is transferred through the movement of fluids, such as air or water. This happens because the fluid near a heat source becomes warmer, causing it to rise and be replaced by cooler fluid. This creates a continuous cycle of heat transfer.

Examples of convection heat transfer include boiling water in a pot, where the heat from the stove causes the water at the bottom to become warmer and rise, while cooler water moves down to take its place. Another example is the heating of a room through a radiator, where warm air rises from the radiator and circulates throughout the room, creating a more even temperature.