Question

Liquids expand when heated and contract when cooled. However this is not always true for water.

1. What name is given to the behavior of water?
2. States two importance of this behavior of water.
3. State any two disadvantages of this behavior.
4. A man wants to fit a brass ring onto a steel rod of diameter equal to the inner diameter of the ring. Explain how this can be achieved

Answer 1

1.  
   • Anomolous expansion of water.
2.  
   • Enables the survival of aquatic during winters
   • Enables weathering of rocks to take place.
3.   
   • Can cause accidents in water transportation
   • Can cause pipe bursts
4.   
   • Heat the ring to allow its diameter increase. Fix the rod into the hole and allow the two to cool.