Name:__________________
Date:________
1. Sound is a wave-form phenomenon which is produced by _________.
2. When the vocal cords become swollen they have difficulty vibrating. When this occurs, you have __________.
3. For sound waves to travel they need a _________.
4. All ______ can conduct sound waves.
5. A ______ is a place that has no matter.
6. On the moon, communication must occur ____________.
7. Does sound travel at the same speed in all kinds of matter?
8. In normal air, the speed of sound is _,___ feet per second. This is equal to about _ _ _ miles per hour.
9. People can hear sound waves from _ _-_ _, _ _ _ hertz.
10. Hertz is the scientific term for __________ or ______ per ______.
11. A dog whistle produces vibrations _____ _ _,_ _ _ hertz.
12. _____ refers to how high or low a sound is.
13. The shorter a vibrating object, the ______ its pitch.
14. The thicker a vibrating object, the _____ its pitch.
15. Men have _______ vocal cords than women.
16. The tighter the vibrating object, the ______ the pitch.
17. ______ tightens human vocal cords and causes people to talk in a ______ pitch.
18. The greater the amplitude of sound waves, the ______ the sound.
19. Loudness is measured in units called ________. This is abbreviated _ _.
20. A sound of ____ decibels is the quietest sound which can be heard by the human ear.
21. A sound of _ _ _ decibels is the loudest sound which can be heard by the human ear without producing ____.
22. Prolonged exposure to sounds above _ _ decibels can cause hearing loss.
23. Normal conversation is _ _ db.
24. Conversation in my classes is about _ _ db.
25. A rock concert is about _ _ _ db. A jet airplane is about _ _ _ db. A whisper is about _ _ db.
26. The external, fleshy portion of the ear which is trumpet-like in shape is called the _____.
27. The purpose of the pinna is to _______ vibrations and channel them into the ________ _____.
28. Another name for the ear drum is the ________ membrane.
29. The ________ are the three smallest bones of the body.
30. The ossicles are named the ______, _____ and the _______.
31. The function of the ossicles is to ______ the vibrations of the ___ ____.
32. The stirrup changes vibrations to piston-like pressure against a structure called the ____ ______ of the _______.
33. The _______ is a long, curled, fluid-filled canal which is lined with millions of microscopic ____ _____ which are connected to _____ _____.
34. If ripples caused in the fluid of the cochlea bends certain hair cells, the connecting _____ _____ are activated. These _____ ______ feed into the ________ _____ which takes the sound message to our _____.
35. Sounds are realized in the ________ _____ of the brain.
36. __________ deafness usually involves damage to the ossicles or the ear drum.
37. __________ deafness can usually be helped by using a hearing aid or by corrective _______.
38. The __________ sense is our sense of balance.
39. The receptors for the vestibular sense are three ____ -________ canals and two adjoining ____.
40. The vestibular receptors are _____-______ and lined with millions of tiny ____ _____. These are connected to associated _____ _____ which sends their message to the vestibular nerve. The vestibular nerve relays this message to the _____.
41. The vestibular receptors tell us about ________, ____________ and changes in _____________ pull so that we can maintain _______.
42. In which direction would the fluid of the vestibular receptors go if you, a. accelerated rapidly? b. If you stopped quickly? c. If you traveled upward in an elevator? d. If you traveled downward in a elevator.
a. _________ b. _________ c. _________ d. _________
43. When you rotate your body the fluid in the vestibular receptors is slung _______ by __________ force.
44. It is a ___________ in the vestibular receptors which causes motion sickness, activating the _____ center in the brain.
45. List three examples of motion sickness: a. ___ ________ b. ___ ________
c. ___ ________
46. ________ is a mild central nervous system __________ drug which can usually control motion sickness.
47. Our sense of taste is called _________.
48. The receptors for our sense of taste are specialized nerve cells called _____ ____, which respond to the four primary tastes.
49. The four primary tastes are _____, _____, ______ and ____.
50. The taste buds for _____ and _____ are near the tip of the tongue.
51. The taste buds for bitter and sour are to the _____ and the ____ of the tongue.
52. Much of what we call taste is actually taste combined with _____.
53. Our sense of smell is called _________.
54. The receptors for our sense of smell are found in the _________ _____ __ ___ _____.
55. Our sense of smell tells us about ________ qualities of the air we breath.
56. For us to be able to detect a chemical with our sense of smell, the chemical must fit one of our ________ _____ on the olfactory bulb. If it does not fit, we ______ detect it.
57. ______ ________ and _______ are deadly chemicals for which we lack a receptor
site and cannot recognize by smell.