Question

Which describes the movement of a fluid during convection?

Warm and cool fluids rise.
Warm and cool fluids sink.
Warm fluid rises and cool fluid sinks.
Warm fluid sinks and cool fluid rises

Answer 1

Warm fluid rises and cool fluid sinks.

Explanation: Heating reduces a fluid's density, so the warm fluid becomes buoyant and rises; cooler fluid is denser and sinks, creating convection currents (e.g., boiling water, atmospheric convection).