Question 1
If you press down on a piano key, let's say middle C, it generates a sound wave. Now, imagine that you press it down much harder so that it still plays the same tone but much more loudly. How would pressing the key down harder change the sound wave produced?
A. The sound wave's wavelength would increase.
B. The sound wave's amplitude and energy would increase.
C. The sound wave's frequency would increase.
D. The sound wave's energy would decrease.
B. The sound wave's amplitude and energy would increase.
A sound wave with a wavelength of 30cm originally traveling at 300m/s enters a new medium. The wavelength of the wave is now 15cm. The pitch of the sound:
A. Increased
B. Decreased
C. Stayed Constant
C. Stayed Constant
Which of the following describes the relationship between wavelength and frequency?
A. As frequency increases, wavelength increases
B. As frequency decreases, wavelength decreases
C. As frequency increases, wavelength decreases
C. As frequency increases, wavelength decreases