Question

During convection, _________, less dense fluid rises and ________, denser fluid sinks.

Answer 1

During convection, warmer, less dense

fluid rises and colder, denser fluid sinks.

Answer 2

Warmer, colder

Convection is the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperature.

Warmer fluid is less dense so it rises and colder fluid is more dense so it sinks.