Draw a graph to show the variation in density of water with temperature in the temperature range $0^{\circ }C to {10}^{\circ }C$

Explain the following :

(a) Water pipes in colder countries often burst in winters.

Explain the following :

(b) In winter, water tank start freezing from the top not from the bottom.

Explain the following :

(c) Fishes survive in ponds even when the atmospheric temperature is well below $0^{\circ }C$.

Explain the following :

(d) A hollow glass sphere that floats with its entire volume submerged in water at $4^{\circ }C$sinks when water is heated above $4^{\circ }C$.

Explain the following :

(e) A glass bottle completely filled with water and tightly closed at room temperature, is likely to burst when kept in the freezer of a refrigerator.