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.movement in a gas or liquid in which the warmer parts move up and the cooler parts move down convection currents.

Convection currents form because a heated fluid expands, becoming less dense. The less-dense heated fluid rises away from the heat source. As it rises, it pulls cooler fluid down to replace it. This fluid in turn is heated, rises and pulls down more cool fluid.

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Convection occurs when high-energy particles move and replace other particles having less energy. A convection cell is a system in which there are differences in density within a fluid (either liquid or gas).

  • Convection refers to the transfer of heat by the movement of a liquid or gas (i.e., a fluid) between areas where there are differences in temperature.

  • A convection cell is a phenomenon that occurs when a fluid is warmed, thereby it expands, becomes less dense, and moves into a region of greater density.

  • Convection cells are responsible for the heat transfer in the Earth's mantle or the blowing of the winds.

In conclusion, convection occurs when high-energy fluid particles move and replace other particles having less energy. Moreover, a convection cell is a system in which there are differences in density within a fluid.

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