What is the specific density of sea water and fresh water?
I am unfamiliar with “specific density” as a term. Perhaps you are confusing “density” and “specific gravity”. “Density” is a measure of mass per unit of volume. The higher an object’s density, the higher its mass per volume. The average density of an object equals its total mass divided by its total volume. A denser object (such as iron) will have less volume than an equal mass of some less dense substance (such as water). It is measured in units like grams per cubic centimeter (g/cm^3) or pounds per cubic inch lb/in^3). “Specific gravity” is the density of a substance divided by the density of water. Since water has a density of 1 g/cm^3, and since all of the units cancel, specific gravity is the same number as density but without any units. Pure water has the density of 1 g/cm^3 and a specific gravity of 1. Two of the most important variables in seawater are temperature and salinity (the concentration of dissolved salts). The two quantities work in conjunction to control the density
