Question

Use your brain power!
How will you explain following statements with
the help of the anomalous behaviour of water ?
1. In regions with cold climate, the aquatic plants and animals can survive even when
atmospheric temperature goes below 0 °C (See figure 5.7).
2. In cold regions in winter the pipes for water supply break and even rocks crack.
​

Answer 1

Explanation:

When the atmospheric temperature goes below 0

∘

C, the water at the surface gradually freezes to ice, but the water under the ice layer remains at 4

∘

C. The ice has little passageways to let air in and out. Hence, the oxygen gets dissolved and other gases are pushed out.

Answer 2

Answer:

on 1 some aquatic plants are extremophiles so they are able to survive all types of temperatures

even below 0 degrees (though we can't see the figure)

2 is this is because the pipes freeze and they undergo contraction and expansion hence they break same thing applies to the rocks