How does depth affect the density of surrounding fluids for divers?

The correct answer indicates that density increases with depth in surrounding fluids, such as water. This phenomenon occurs because as divers descend, they experience greater pressure from the weight of the water above them.

Water is nearly incompressible, but as pressure increases with depth, small changes in the density occur. The higher pressure causes the molecules within the water to be pushed closer together, resulting in a denser fluid. This increase in density is important for divers to understand, as it can affect buoyancy. When a diver descends, they must account for the increased density to maintain proper buoyancy and manage their ascent or descent correctly.

The other options do not accurately describe how density behaves with depth in fluids. The idea that density remains constant with depth does not factor in the increasing pressure from the water above, and the assertion that density decreases with depth contradicts the basic principles of physics regarding fluid pressure. Similarly, claiming that density is only affected by temperature ignores the significant role that pressure plays in influencing fluid density, particularly at greater depths.