SOUND 219 



5. What is the form of a sound wave? 



6. Two strings have the same length and tension, but one is 

 larger than the other. In what respect will their tones differ? 



7. Can we hear sounds farther on a foggy or a clear day? 



8. What is meant by " pitch " of sound? By quality? 



9. Why does a cold sometimes cause deafness? 



10. What is the function of the ear wax? 



11. What is sound? 



12. Why should a drum head be well stretched? 



