TOPIC: Sound, Hearing, and Speed of Sound

1. Sound may be described by three perceptual characteristics, two of which are pitch and loudness. Define pitch and loudness of sound. What determines a) pitch and b) loudness of sound?
2. A male's voice is generally low-pitched compared to a female's voice. What could be a possible reason for this?
3. The frequency of source A is twice the frequency of source B. How would the wavelengths coming from the two sources compare?
4. What is the purpose of the water level in the resonating air column?
5. Suppose that we increase the temperature of the air through which a sound wave is traveling. a) What effect does this have on the velocity of the wave? Explain b) For a given frequency, what effect does increasing the temperature have on the wavelength of the sound wave? Explain.
6. If you were lying on the ground, would you hear footsteps sooner or later with your ear touching the ground or not?