Use the graph to fill in the missing temperature, salinity, and density values on the table.

Positon      value to fill in

A              1.025 g/cm^3

B               34%

C               15°C

Explanation:

1) The first value to fill in is the density on position A.

The procedure is using the temperature given, i.e. 20°C, and the salinity, 35ppt, with the graph.

Place your ruler on the horizontal axis on the mark of 35% and go upward vertically until reaching the horizontal lecture of 20°C, the intersection points is on the curve of density 1.025 g/cm^3.

So, that is the density to put on the table for the position A: 1.025 g/cm^3.

2) The next value to find is the salinity on position B.

Use the temperature 25°C and the density 1.023.

Move horizontally from the vertical read of 25°C to the right until you reach the curve with 1.023 g/cm^3 density. Then move vertically downward to read the salinity which is 34%.

Fill in the blank of position B that value: 34%.

3) The final blank corresponds to the temperature on the position C.

Moving upward from the salinity 35% until the curve density = 1.026 g/cm^3, you find that the intersection is at temperature 15°C.

That is the value to put on the missing value for position C: 15°C.