Question

If the atmosphere contained fewer salt crystals and dust particles than it now does,

a. clouds would form less readily

b. clouds would form more readily

c. the formation of clouds would be unaffected

d. snow would never fall

 

Answer 1

The temperature of a gas increases when it compresses and decreases when it expands. When a warm air moves upward, then it expands. During this process, the pressure of air decreases and becomes cool. If the temperature is reduced to very low, then some air is formed as saturated air and some of its water vapor condenses on small dust particles and salt flakes formed as clouds of small water droplets or ice crystals. The clouds formed at low altitude contain water droplets and at high altitude contains ice crystals.

 

Thus, the option (a) is correct.

The atmosphere contains less salts flakes. So, clouds form less readily.

 

Thus, the options (b), (c), and (d) are wrong.

Thus, the option (a) is correct.