314 GENERAL SCIENCE 



In the United States Government irrigation projects 

 the reclaimed land is sold to settlers at a price which more 

 than pays the cost of the work. The money thus received 

 is used in the construction of other reservoirs and canals. 



Private corporations often sell the water to users. 



QUESTIONS 



1. What conditions determine what becomes of the rain when 

 it falls to the ground? 



2. What work is done by the water that sinks into the ground ? 



3. What is an artesian well? 



4. How is the dissolving power of soil water increased? 



5. What is a river basin ? A divide? 



6. What are the characteristics of a young river? 



7. Why are there no floods at Detroit? 



8. Is the water in a salt lake increasing or decreasing in density ? 

 Why? 



9. Why is it impossible for a person to sink in Great Salt Lake ? 



10. What are some of the peculiarities of rivers in dry climates? 



11. How do rivers build deltas? Where? 



12. If the velocity of running water is doubled, how will its 

 carrying power be affected ? 



13. What kind of soil bakes hardest in the sun? 



14. What crops in your region grow best on wet lands? 



15. How does pressing down the soil affect the movement of 

 soil water? 



16. Is it a good thing to pack the ground over grains of corn just 

 planted? Why? 



17. What causes the alkaline soils found in some of our western 

 states ? 



18. Why are wet soils cold? 



19. How may the seepage in irrigation canals be lessened? 



20. After land is irrigated why should it be tilled ? 



21. Why do irrigated soils become alkaline? What is the 

 remedy for this? 



