General Thought Questions 489 



(c) State your conlusions based on the experiments. 



(d) Show how a practical use of these conclusions may be made by 

 you in your own sleeping room. 



33. Why is deep breathing better than shallow breathing? 



34. Name five steps taken by the body in getting energy out of an apple. 



35. Name some of the values of a balanced diet 



36. (a) What is the effect of alcohol on the white of an egg? 



(b) How does alcohol affect the digestive juices? 



(c) How does alcohol affect the walls of the arteries? 



(d) How does alcohol affect the white corpuscles ? 



(e) Give one good reason (not mentioned in your answers to a, b, c, 

 or d) why athletic coaches prohibit the use of alcohol by athletes 

 during training, and one good reason why many athletic trainers 

 discharge from training squads athletes found using tobacco. 



37. (a) Explain how an ordinary liquid thermometer works. 



(b) Make a drawing of a thermometer tube, indicating in their proper 

 positions by degrees the freezing and boiling temperatures of water 

 and the best average temperature for a living room. 



(c) Name two liquids commonly used in making thermometers. 



38. (a) Mention three ways by which heat is transferred from one place 



to another. 



(b) By which method is the heat in your schoolroom chiefly dis- 

 tributed? Give reasons for your answer. 



(c) Explain fully with the aid of a diagram why a room is usually 

 warmest near the ceiling. 



