126 EXPERIMENTAL GENERAL SCIENCE 



10. If the barometer had been made with water instead of mercury, 

 would the column of liquid have been longer or shorter? Why? 



11. Would the variations in the height of the column of water be 

 greater or less than in the mercury column? Why? 



12. If a bottle is corked at sea level and opened on a mountain top 

 will more air enter or some come out? Why? 



13. Fill a bottle with water and cork with a two-hole stopper. Place 

 a finger over one hole in the stopper and invert the bottle. Why does 

 the water not run out? 



14. Why does the water run out when the finger is removed? 



15. In drinking liquid through a straw, one removes the air from the 

 straw and the liquid rises into the mouth. Explain. 



16. In drawing liquids from a barrel or in pouring them from a closed 

 can, the liquid will not run smoothly unless the cap on the can or the 

 bung in the barrel is loosened. Why? 



17. Why do liquids run so irregularly from a bottle or jug? 



18. Over how high a structure ought one to be able to siphon water 

 at sea level? 



19. Could one siphon alcohol or kerosene over a higher structure than 

 he could siphon water? Why? 



20. When a break is made in the skin, blood runs out. Does this 

 indicate a pressure within the body greater or less than 15 pounds to 

 the square inch? 



