What term is used to describe a measurement of a liquid's resistance to flow?

The term that describes a measurement of a liquid's resistance to flow is viscosity. Viscosity quantifies how thick or thin a liquid is, which in turn affects how easily it can move. High viscosity liquids, like honey, flow slowly because they have a greater resistance to movement, while low viscosity liquids, like water, flow easily due to their lower resistance. Understanding viscosity is crucial in various applications, including firefighting, where the flow characteristics of water and other fire suppression agents impact their effectiveness.

Densitometry relates to measuring the density of substances, which, while important in fluid dynamics, does not directly measure resistance to flow. Temperature refers to the thermal state of a substance and can influence viscosity, but it is not a measure of flow resistance itself. Conductivity is a measure of a material's ability to conduct electricity, not its flow characteristics. Therefore, viscosity is the most appropriate term for describing liquid flow resistance.