Question

What conditions would most likely cause a decrease in the salinity of ocean water?

A. freezing of glaciers

B. a river flowing into the sea

C. extremely hot weather

D. high rates of evaporation

Answer 1

The condition that would most likely cause a decrease in the salinity of ocean water is a river flowing into the sea. This would make the salinity decrease, because rivers a fresh water and have no salt in them. Since ocean water is made up of salt, water with no salt mixing with water with a lot of salt will cause a decrease in the salinity. I know this answer, because I took a quiz on this, and the correct answer was a river flowing into the sea.

Answer 2

The correct answer is B.

Freezing of glaciers would do absolutely nothing to the salinity, as for hot weather and evaporation would leave behind the salt and thus INCREASING the amount of salt to water in the ocean.