A typical raindrop contains one million times the water volume of ...

[penza]

A typical raindrop contains one million times the water volume of a cloud droplet. Explain how this huge increase in water volume occurs.
 
  What will be an ideal response?

Question 2

A significant, widespread occurrence of freezing rain is referred to as an ________.
 
  Fill in the blank(s) with the appropriate word(s).

[matt95]

Answer to Question 1

Answer: Initial growth through condensation occurs but this is not adequate to produce precipitation. The collision-coalescence process and the Bergeron process operate to grow precipitation size elements. The collision-coalescence process operates through the collision and merging of different size drops in warm clouds where the temperature is above freezing. The Bergeron process occurs in clouds that are below freezing and therefore have a supply of supercooled drops and ice crystals. Riming and aggregation are important agents for achieving precipitation.

Answer to Question 2

Answer: ice storm