1.  e)  resonance  -- you just need to know the definition of terms

2.  e)  ossicles -- these bones act together as a lever that vibrates the ear drum

3.  e)  3000-4000 Hz ...

4.  c)  2-3 Hz -- This corresponds to 1/30th of the critical frequency band at 400 Hz

5.  a)  4:3  -- I suppose you should just know those intervals as well

6.  d)  111 Hz and 2 Hz  -- For two frequencies with 2 Hz of each other, you will hear the average of
                                           the two frequencies and they will beat with a frequency of the difference
                                           between the two frequencies

7.  b) 141 Hz  -- First, from lab you should recall that the f goes as 1/sqrt(V).  So if I halve the volume,
                           the frequency must increase (so it can't be a)).  It will increase by 1/sqrt(1/2) = sqrt(2).
                           New frequency = sqrt(2)*old frequency = 141 Hz.

8.  c)  4 times -- The easy way to think about this is note that:
                           DOUBLING THE INTENSITY INCREASES THE LOUDNESS BY 3 DB!
                           In our case (L = loud loudness,  L0 soft loudness)
                           L = L0 + 6 dB = L0 + 3dB + 3dB
                           I must have doubled the intensity twice:  doubling twice is four.

9.  c)  square  --  The square has the most sharp edges, leading to higher harmonics.

10.  e) consonance  -- know the definitions