Question

Perform an activity to observe anomalous expansion of water by keeping a bowl of water in deep freeze overnight and write the description and usefulness of this behaviour of water in nature

Answer 1

Explanation:

The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4°c to 0°c

C and it becomes less dense.The density becomes less and less as it freezes because molecules of water normally form open crystal structures when in solid form

Answer 2

an activity to observe the anomalous expansion of water by keeping a bowl of water in the deep freezer overnight.

Explanation:

• The volume of the the bowl that has been occupied by the water is is noted. Then after freezing the final volume is noted. It is found that the volume of water has expanded.

• anomalous expansion of water states that the water of the water is maximum at 4 degree Celsius. There is increase in the density e of water if we heat or cool it below 4 degree Celsius.

• The usefulness of this behaviour of water is that in the Arctic and Antarctic area the top part of the ocean freezes but the bottom part does not freeze and helps in maintainance of the life of Aquatic organism in those places.

To know more about anomalous expansion of water,

What do you mean by anomalous expansion of water? ICSE Class 9

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