Question

what is convection explain​

Answer 1

Explanation:

Convection is the circular motion that happens when warmer air or liquid — which has faster moving molecules, making it less dense — rises, while the cooler air or liquid drops down. ... Convection ovens use fans to circulate heat so that whatever you're cooking cooks faster and more evenly.

Answer 2

Convection is the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperature. Warm air is less dense than cold air, and so convection currents can form in the presence of a temperature gradient.