Question

Why a hollow glass sphere which floats with its entire volume submerged in water at 4 C, sinks when water is heated above 4 C.

ICSE Class 9 Physics Chapter Heat and Energy

Answer 1

Answer:

Heat = meaning was a hery hotness

Energy = You take a food and you was a very healthy boy

Explanation:

ICSE meaning is a Introduce central state enemies

And please mark a brainlist

Answer 2

Answer:

The density of substances changes on heating. At 4°C ,the density of water is maximum. An object will stay afloat on water till its density is less than that of the density of water.

the density of hollow sphere is less than the density of water at 4°C, therefore it stays aflost. When the water is heated above the 4°C, the density of water decreases and the density of the sphere becomes more than the density of water. As a result, the hollow glass sphere sinks.

Hope this answer is helpful.