130 INTRODUCTION TO GENERAL SCIENCE 



sun. The ocean is transparent and allows some of the energy 

 to pass through. There are also convective currents in the 

 ocean which cause much of the water to be raised to the same 

 temperature, while it is only the surface of the earth that is 

 warmed. Therefore the air over the land becomes much 

 hotter than the air over the water, expands, and is pushed up 

 by the colder air coming in from the ocean. This produces 

 the sea breeze. In the night the land cools off faster than 

 the ocean, because water, owing to its great capacity for heat, 

 retains heat -longer than any other substance. Then the air 

 over the ocean is warmer than over the land, and the cooler 

 air of the land goes out to take the place of the warmer air 

 over the ocean. 



References : 



1. 1103 : 101-104. The Winds of the Globe. 



2. 1304 : 255-262. Different Kinds of Winds. 



a. 1102 : 112-139. All the Kinds of Winds. 



b. 1301 : 90-100. Planetary Winds. 



c. 1302 : 304-311. The Relations of Pressure and Winds. 



d. 1305 : 81-89. Three Classes of Winds. 



e. 1306 : 70-84. Classification of the Winds. 



/. 1308 : 94-99. Movements of the Atmosphere. 



g. 1309 : 218-225. Atmospheric Circulation. 



h. 1310 : 386-396. General Circulation of the Atmosphere. 



i. 1311 : 266-268. Origin of Terrestrial Winds. 



j. 1312 : 368-370. Classification of the Winds. 



k. 1313:185-188 Kinds of Winds. 



96. VELOCITY OP WINDS 



The velocity of winds depends upon the difference of tem- 

 perature in the place from which the wind comes and the place 

 toward which the wind is going. The greater the difference 

 of temperature between the two places, the greater the veloc- 



