Definition
Convection: is the transfer of heat through fluids (gases or liquids) from a warmer spot to a cooler spot.
Hawaiian Translation: Paialewa
Example
The particles in fluids (liquids or gases) can move from place to place when heated. Convection occurs when particles with a lot of heat energy move and take the place of particles with less heat energy.
Heat energy is transferred from hot places to cooler places by convection.
Click here for an example of convection currents in a gas. 
Click here for an example of convection currents in a liquid. 
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