THE HEAVENS 



195 



(e) A diagram (at board, or on paper) showing the form 

 of the "Big Dipper," and its position relative to the North 

 Star. 



(/) If any change occurs in the brightness of the same 

 star night after night, aside from effects of atmospheric 

 conditions. 



7. From books and other sources secure information on 

 the following topics : 



(a) The names of the eight planets of our solar system 

 in order of their distances from the sun. 



O 



MERCURY 



O 



VENUS 



O 



EARTH 



O 



MARS 



FIG. 87. Relative sizes of the planets. 



(6) The distinctions between star and planet as to their 

 sources of light, and their physical states. 



(c) A diagram to show the relative sizes of the planets. 



