336 BAIN. 



Q. What is RAIN ? 



A. The vapour of the clouds or air 

 condensed, and precipitated to the earth. 



Q. WHY is the vapour of the air or clouds 



PRECIPITATED ? 



A. When the air is saturated with 

 vapour, if a cold current condenses it, it 

 is no longer able to hold all its vapour in 

 solution, and some of it is squeezed out, 

 and falls as rain. 



Q. Why does n^ixfall in DROPS ? 



A. The vapoury particles in their 

 descent attract each other; and those 

 which are sufficiently near, unite and 

 form into a drop. 



Q. Why does not the COLD of NIGHT ALWAYS 

 cause ramP 



A. When the air is not near satura- 

 tion (although condensed by the chill of 

 evening), it will still be able to hold its 

 vapour in solution. 



Q. Why does a PASSING CLOUD often drop 

 RAIN? 



A. Because the cloud (travelling 

 about on the wind) comes into contact 

 with something that chills it; and its 



