Air would be expected to move into a tympanic cavity via the auditory tube in al

Question

Air would be expected to move into a tympanic cavity via the auditory tube in all of the situations below except...

A. a drving down the road from the top of pikes peak in Colorado

B. Decending 30 ft. to the ocean floor with scuba gear

C. closing your mouth, holding your nose, and pressurizing your pharynx

D. falling barometric pressure related to an incoming storm

E. all of the above

#2- The loudness of a perceived sound is related to the ___ of the sound vibrations and the pitch of that sound is related to the ___ of the sound vibrations.

A. amplitude-size

B. frequency-amplitude

C. source-frequency

D. orgin-amplitude

E. amplitude-frequency

Explanation / Answer

According to me in the first question you can hear sounds in all of the cases.Hence the answer should be (E).

Case1.If you driving down the mountains it is not going to effect you hearing ability because initially due to pressure change(that is also for a very small span of time) it will be difficult to percieve sound but evetually you can hear.

Case2.Going inside the oceans with diving suit also not going to affect you hearing because between your diving suit and ocean there is an air gap(acting as a medium) maintained which will help you to percieve sounds .As anything that strikes your suit you will hear it sounds for sure.

Case3.Simply you can do it on your own, do as this option is saying and you will see that you can still hear. Its because pharyngotympanic tube is present between pharynx and middle ear is for stabilizing the pressure and pressurizing the one end of the tube won't affect you hearing abilities.

Case4.Falling pressure means you are rising above the ground level.Actually its the same case1 but just opposite, instead of coming down now your going up.So here as well for transient amount of time you wont be able to hear but as soon as your pharyngotympanic tube will equalize the pressure, you will start hearing.

Question#2 - Answer(E)

Loudness of sound is defined as "Amplitude".Greater the amplitude of sound greater will be its loudness.

In general sense we can say pitch is the quality of sound ,like as pitch of female voice is greater then of male voice. With the pitch we can diffrentiate between two musical note like this one is higher and that one is lower. 'Pitch' can be directly related to "frequency"

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