Answer
1) Upper
2) Lower
3) Lower
4) Upper
5) Upper
Work Step by Step
1) The higher the distance between the peak and bottom of the curve, the higher the amplitude. Thus, the answer is upper.
2) The lower has a greater wavelength, for there is a larger distance between peaks.
3) The lower one also has a lower period, for it takes longer to complete one wave.
4) There are more waves in the upper one, so it has a higher wave number.
5) Because the lower one has the longer period, the upper one must have the higher frequency.
