LAND BREEZE. 309 



sun stops the radiation of heat from the 

 earth, and warms its surface. 



Q. How does this WARMTH produce a 

 BREEZE? 



A. The air (resting on the earth's 

 surface) is warmed by contact, ascends 

 upwards, and colder air rushes in to fill 

 up the void, which is the cause of the 

 morning breeze. 



Q. Why is there often an EVENING BREEZE 

 during the summer months ? 



A. The earth radiates heat at sun-set, 

 and the air is cooled down quickly by 

 contact : this condensation causes a 

 motion in the air, which is the evening 

 breeze. 



Q. Why are TROPICAL ISLANDS always subject 

 to a s~E\-breeze every MORNING (i. e. a breeze blowing 

 from the sea to the land) ? 



A. The solar rays are unable to 

 heat the surface of the sea as they do the 

 earth ; therefore, the air resting on the 

 earth is more heated than the air resting 

 on the sea ; and the colder sea air blows 

 inland to restore the equilibrium. 



Q. Why is the LAND BREEZE UNHEALTHY ? 



