The pitch of a musical sound is most related to the sound wave's ________.
a. wavelength
b. speed
c. frequency
d. amplitude
2. The loudness of a musical sound is most related to the sound wave's ______. (Hint: A high-pitched note can be quiet or loud, so this should be different than your answer for pitch.)
a. wavelength
b. speed
c. frequency
d. amplitude
3. When are sound intensity levels in decibels negative? (Hint: look at the formula for decibels.)
a. never
b. when the sound wave intensity is below the loudness threshold of human hearing
c. when the sound waves are traveling away from you
d. when the sound waves are decreasing in intensity over time
e. when the sound wave frequency is below the frequency threshold of human hearing