Advertisement Remove all ads

How Does Anomalous Expansion of Water Help Aquatic Organisms in Cold Climates ? - Chemistry

How does anomalous expansion of water help aquatic organisms in cold climates ?

Advertisement Remove all ads

Solution 1

The anomalous expansion of water helps in survivals of water animals in very cold climates. Initially when temperature of water falls, it becomes heavier and sinks down. This process continues till 4°C. Then after this expansion takes place. The surface layer of water gets freezed. Ice being bad conductor of heat does not allow loss of heat from the water below and results in survival of water animals.

Solution 2

When water is cooled it contracts and its density, increases until the temperature reaches 4°C, on further cooling water starts expanding with decrease in its density. This is anomalous phenomenon. The aquatic organisms can live there easily.

Concept: Reactivity of Metals with Cold Water, Hot Water and Steam (With Products Formed).
  Is there an error in this question or solution?
Advertisement Remove all ads

APPEARS IN

Selina Concise Chemistry Class 8 ICSE
Chapter 8 Water
Exercise I | Q 7 | Page 107
Advertisement Remove all ads
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×