Our Surroundings 



18. State whether you think the following statements are true or false, 

 giving your reasons for your opinion in each case : 



(a) All bacteria are harmful. 



(b) A person living in a frigid zone requires more fat food than 

 one living in the torrid zone. 



19. Give the hygienic importance of each of the following: 



(a) Bathing the skin, (b) chewing the food well, (c) drinking 

 plenty of water, (d) cleaning the teeth every day, (e) eating 

 plenty of fruits and vegetables. 



20. Why do foods containing water spoil more quickly than thoroughly 

 dried foods? 



21. Of what value to health is street sprinkling? 



22. With regard to fire: 



(a) Mention a fire hazard that may exist in the home; the school; 

 some public meeting building. Tell what means should be taken 

 to eliminate each hazard. 



(b) Suggest things to remember if caught in a burning building. 



(c) Tell what to do if a person's clothing catches fire. 



(d) Give directions for first aid treatment of burns. 



23. State two physiological reasons why a young person should not use 

 tobacco in any form. 



24. Why is it "good citizenship" to observe local health regulations, and 

 to safeguard one's own health? 



25. Does the color of clothes affect health or comfort? How? 



26. A housekeeper sprinkles a floor before using a broom but not before 

 using a vacuum cleaner. Why? 



27. Why is an injury to the spine so often a serious matter? 



28. Food is a fuel and body builder. Keeping this statement in mind, 

 tell (a) why summer and winter diets should be different, (b) why 

 a balanced diet is best for most people, (c) why foods containing 

 large amounts of water are expensive, (d) why wastes should be 

 regularly eliminated from the body, (e) why plenty of exercise and 

 fresh air are needed every day. 



Complete the statements in the next three questions. 



29. Our sense of smell protects our health by . 



30. Regular daily exercise is better than a longer period of exercise on 

 Saturdays only, because . 



31. If in doubt of the purity of one's drinking water, one should . 



32. By aid of a labeled drawing or blackboard sketch of a model, demon- 

 strate the proper ventilation of a room. 



(a) By referring to your diagram, explain how the model was used 

 to show good and bad methods of ventilation. Use arrows to 

 show directions of air currents. 



(b)Tell what happened in the experiments. 



