Welcome To Whitehall Township Whitehall Township is located in the center of the Lehigh Valley. The Township is one hour north of Philadelphia and an hour and half from New York City.
SALINITY OVERVIEW Salinity is the concentration of dissolved salts in water, usually expressed in parts per thousand (ppt). Objects float higher in salt water than fresh water because salt water is denser (heavier per unit of volume).
Where the column and the row intersect on the table is the salinity reading for the water sample. It is expressed in parts per thousand (ppt). BACKGROUND When we measure the salinity of water, we look at how much dissolved salt is in the water. Salinity is expressed in parts per thousand (ppt). Objects float higher in salt water than fresh water because salt water is denser (heavier per unit of volume). OBJECTIVES Following completion of this lesson, the students will be able to: â¢ Determine the salinity of a water sample by using a hydrometer.