GENERAL THOUGHT QUESTIONS FOR 

 DISCUSSION AND REVIEW 



GROUP II 



1. Did the pioneer have more, or less, control of his surroundings than 

 the modern city dweller has? 



2. Is the extent of the environment that affects one greater or less today 

 than in the days before modern science? 



3. Under what conditions does air become wind? 



4. How would we be affected if matter could not change its form? 



5. Is it true or false that water can be heated beyond the boiling point? 



6. Why does a cement sidewalk or a pavement sometimes "buckle" in 

 hot weather? 



7. Explain: 



(a) A saw becomes hotter in sawing hard wood than in sawing 



soft wood. 



|(b) Birds "fluff" their feathers to keep warm. 

 (c) There is always a little space left between the successive steel 



rails of a track. 



8. Why do we have some cool days during, a hot summer? 



9. Why does a sharp thunderstorm cool the air? 



10. Is it true that a stove is superior to a fireplace for heating? Why? 



11. Why is water used in automobile radiators? 



12. Is it true or false that a seashore often has rain when it is snowing 

 inland ? 



13. What causes water to percolate in a coffee percolator? 



14. How may a room be aired most quickly? 



15. Why is it that a steam heating system warms a room more rapidly 

 than a hot water system? 



16. Is there more, or less, air in boiled water than in water as drawn from 

 a faucet? Why? 



17. Why does a water pipe burst if water freezes in it, but a pail con- 

 taining water is not affected under the same circumstances? 



18. Why is it that one may fan a spark to a flame by blowing on it and 

 yet put a candle out by the same means? 



19. State several differences between the sun and the moon. 



20. Why can't we see the stars during the daytime? 



21. William discovered a fire in a closet He left the door open and ran 

 for water. What mistake did he make? Why? 



22. Why do you blister your hands if you slide down a rope rapidly? 



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