Question
Name the factors affecting salinity.

Answer

Due to the sun’s heat, evaporation happens at a faster rate. Evaporated water turns into water vapour and reduces in quantity. But amount of salt remains the same in the remaining water and therefore the salinity of water increases.
  • In seas where the rate of evaporation is high than the supply of fresh water, salinity is high.
  • In seas where the supply of freshwater exceeds the rate of evaporation, salinity is low.
  • Salinity is not affected much in seas where both the supply of freshwater and evaporation of water is low.

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