Which is not a typical property of surface water?

• A. Depth of the ocean floor
• B. Temperature
• C. Salinity
• D. Turbidity

Answer: (A)

Surface water properties describe the water itself at the surface and how it interacts with the air and environment around it. Temperature tells you how warm or cool the surface layer is, influenced by sunlight and air temperature. Salinity reflects how salty the water is, varying with evaporation, precipitation, and freshwater input. Turbidity indicates how clear or murky the water is due to suspended particles or plankton. The depth of the ocean floor, on the other hand, describes the seabed’s topography (bathymetry) and is not a characteristic of the water itself. While the seafloor depth can affect water movement and other conditions indirectly, it is not a typical surface-water property.