convection currents

Warm fluid rising

Convection currents are circular movements in fluids—liquids or gases—caused by temperature differences.

Warmer material rises because it's less dense, while cooler material sinks, creating a continuous loop.

These currents distribute heat in oceans, the atmosphere, and Earth's mantle: Convection currents in the mantle drive plate tectonics.

The same principle operates in a pot of boiling water.

Opposites
heat transfer mechanism

convection currentsconduction

Heat transfer through contact

thermal conduction · radiation · heat conduction · thermal radiation · electromagnetic radiation

fluid motion state

convection currentsthermal equilibrium

Equal temperature throughout system

still water · stagnation · diffusion

Family

current, currency, convection, convect

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