Bharath went to his grandfather’s house in winter this year. As usual he went for fishing. His grandmother told him there will be no fishes in the lake. He noticed that it was more difficult to find fishes in winter. The fishes were deep inside the river. Whereas in summer they were on the surface and hence he was able to catch fishes. (a) Why are fishes on the surface in water than in the depth in summer?Srisha wanted to keep ice creams without melting. So he had to keep it on ice taken in a container. His grandmother advised him to pour salt on the ice.(a)Why?(b) What value can be derived from this?

Bharath went to his grandfather’s house in winter this year. As usua

1.	Bharath went to his grandfather’s house in winter this year. As usual he went for fishing. His grandmother told him there will be no fishes in the lake. He noticed that it was more difficult to find fishes in winter. The fishes were deep inside the river. Whereas in summer they were on the surface and hence he was able to catch fishes. (a) Why are fishes on the surface in water than in the depth in summer?Srisha wanted to keep ice creams without melting. So he had to keep it on ice taken in a container. His grandmother advised him to pour salt on the ice.(a)Why?(b) What value can be derived from this?
Answer» Solution :According to Henry’s law at low temperature gases are more soluble and hence as more oxygengets dissolved in WATER fishes survive better even in DEPTH of the river. In summer as the oxygenis less in water the fishes come to the surface. (B)The value that I DERIVE from this is WISDOM is superior to knowledge