LATITUDE ZONES 



25 



NORTH POLE 



SOUTH POLE 

 Fig. 10. 



ern hemisphere in January because our hemisphere is then 



pointed away from the 



sun and therefore there 



are fewer heat rays fall- 

 ing upon a given area 



in this hemisphere than 



there are when we are 



farther away in July. 

 11. Latitude Zones. 



As the axis of the earth 



is inclined 23J from 



the perpendicular to the 



plane of its orbit, the 



rays of the sun will fall 



vertically at some times 



during a year upon all 



points within 23 J of the equator both north and south. 



To this region we have 

 given the name of the 

 torrid zone. There will 

 be a day during the 

 year when no direct 

 sunlight will fall upon 

 points within 23J of 

 the poles. The areas 

 inclosed by lines drawn 

 around the earth, 23^- 

 from the poles, are 

 called frigid zones. The 

 areas between the frigid 

 zones and the torrid 

 zones are called the 



temperate zones. We live in the north temperate zone. 

 Although as far as the direct influence of the sun is con- 



A LAPLANDER'S HUT. 



Made of thick sod to keep out the cold 



of the frigid zone. 



