Question

"Oceanographers are not so much interested in the absolute density of the water but in density changes in space and time. Such changes are quite small. Oceanographers therefore use the quantity_0 = p - 1000 (pronounced sigma-tee = density minus 1000), which gives the density excess or deficit against a reference density of 1000 kg m3. In principle, Ot should have the same unit as p (kg m-3); but oceanographers never give units with ot. Thus, freshwater has a Ot value just slightly less than zero." All your calculations of density will be in values of sigma tee (). Once you are certain that you understand the information on this page, click Continue. Page 2: Here you will see the Density Calculator. This first exploration into water density is with fresh (not salty) water. Find the densities of water at the following temperatures and write them here: Temperature (°C) Density (kg/m3) Density (0) Pane 3. Answer the question and move on

Answer 1

Page No. C6t = 6-1000) Date o formula heis given Post G chait Т(°С). Saliniy (35) 1 26. I 26. 24.7 23 2 .7 20 25 ng Chert I 10 75 Salinly (36) - Den8116 (6) . 36 28.4 : 36 27.7 36 26.77 25.55 36 24.12 36. 22.5 10. clecreetjes incrécese density increases increases density increases o 2 empenatuze saling

{$ GE = 6 -1000 Page No. Data pages past Temperature clensity (amma).. gar.96 999.70 999. 1025 998. 207 991.0419 995.65 Dersity 6t -0.04 -0.3 -0.4 -1.793 -2.95 - 4035 20 30. 2 7 t density, 6 = 1000 S... (1+.288.9414 7(T-3, 926) ? ,508929 (T+6890129630 . Kam (you can see a temperature increcesen . - density decoce susss port (a) temp (100) saliniy . 6-density (Reglma demiy (6) 30 1023. 23 1:33 1025 25 35. 27. 37 1029 29 . . 10 30 30 10 27 yer As the density Selinity. inceceses density inerecues Nories from 1024 is to 110 30