52 NATURAL RESOURCES OF HOME ENVIRONMENT 



use a burning glass on your fingers instead of on a piece 

 of paper. This heat or energy is more useful than we at 

 first are aware. Energy is the power to do work. The sun 



How the sun's position varies throughout the year. Does it help explain our cold 

 winters and warm summers ? (After Todd.) 



works for us in many ways, and the most wonderful of 

 all is the making of food by green plants. The length of time 

 that the sun works for us depends upon the section of 



Notice that the beam of sunlight covers a smaller area of the earth's surface at noon 

 than at any other time. 



the country in which we live. Study the sunshine chart 

 to see how much sunshine you have in your own locality. 



