10 GENERAL SCIENCE 



to summer heat, large quantities of moisture will collect on the 

 body, as evaporation does not. take place freely. Very heavy 

 wraps and fur coats should be worn only during unusual exposure, 

 as in driving or motoring. 



QUESTIONS ON EFFECTS OF EVAPORATION 



1. Why does sprinkling the lawns and streets on a hot day 

 in summer cool the surrounding atmosphere? 



2. Why is it so much cooler after a thunder shower? 



3. W T hy do we feel cold in a draft? 



4. The air is just as warm when we are riding in an automobile 

 as it is when we are standing on the lawn. Why do we feel much 

 cooler riding? 



5. Why does not the tennis player feel the heat as keenly 

 while he is playing as when he sits down? 



6. In warm regions large, porous earthen vessels, called " ollas " 

 (o-ya), are placed outdoors. The outer surface is constantly cov- 

 ered with a film of water. Why is the water kept cool? 



7. Why should we be careful to see that all our clothes are 

 dry and " aired" before putting them on? 



8. Why do we feel chilly when we come out of the water and 

 stand on the shore after we have been in bathing? 



9. Why does bathing the forehead with alcohol cool the head? 



10. Which will be cooler, a glass of water or a bottle of water 

 standing on the table? Why? 



11. Why should extra wraps be provided for a person who has 

 been in a crowded hall? 



12. Why should a person take a cold shower after a warm bath 

 in the morning during the winter? 



13. Why will a hot bath in summer keep a person cooler longer 

 than a cold bath? 



14. Why do people place a wet cloth over butter jars in summer? 



15. Why do we catch cold if we get our feet wet? 



16. Why do we get cold if we sit in a draft? 



17. Why did the little boy die who had his body painted with 

 gold paint to represent an angel? 



18. Why is a hunter able to tell which way the wind is blowing by 



