OUTLINE OF SCIENCE FOR THE EIGHTH 

 GRADE. 



THE SUN, STARS, AND PLANETS. VIII. 



1. A brief summary of the facts stated under the same 



topic in the work for the fifth, sixth, and 

 seventh grades. 



2. Theories. 



a. What a theory is. 



b. The use of theories. 



3. The solar system. 



Experiment 1. Drawing the solar sys- 

 tem to scale. 



4. The stars. 



a. What they are. 



b. Their distance from the earth. 



5. The earth. 



a. The age of the earth, shown by formations. 



b. The shape and size of the earth. 



Experiment 2. The shape of the earth 

 caused by rotation. 



6. The crust of the earth. 



a. Rocks and minerals. (See Section 81.) 



b. Soil. 



7. Kinds of rock. 



a. Water formed. 



Experiment 3. Sedimentary rock. 



b. Fire formed. 



c. Chemically formed. 



