The key property that determines whether fluid (air or water) sinks or rises is ________.
A) sound
B) salinity
C) temperature
D) density
E) chemical composition

Question

Quizplus · Accepted Answer

The density of a fluid is the key property that determines whether it sinks or rises. A fluid will sink if it is denser than the fluid below it, and it will rise if it is less dense than the fluid below it. This is known as buoyancy, and it is the reason why objects float or sink in fluids. Temperature and salinity can affect the density of a fluid, but they are not the determining factor. Chemical composition and sound do not have a direct impact on the buoyancy of a fluid.

The Key Property That Determines Whether Fluid (Air or Water)