How do salinometers measure salinity?
a. It measures the number of salt molecules in a set mass of seawater.
b. It calculates the salinity based on the density of the seawater.
c. It measures the electrical conductivity of seawater samples.
d. It calculates the salinity by measuring the chlorinity.
ANS: C
The conductivity of seawater varies with salt concentrations and temperatures. Salinometers are able to
adjust for the water temperature and be calibrated against samples of known conductivity and salinity.
Information can be found in the section Seawater Consists of Water and Dissolved Solids.
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