Question

juan and joseph are opera singers. juan is a baritone, joseph is a tenor, so his voice is higher pitched than juans voice. with respect to their physical properties, the sound waves corresponding to juans voice are lower in ______ than those corresponding to josephs voice.

frequency
decibels
hue
amplitude

Explanation:

The pitch of a sound is directly related to the frequency of its sound - wave. Higher - pitched sounds have higher frequencies, and lower - pitched sounds have lower frequencies. Since Juan's voice is lower - pitched than Joseph's, the sound waves corresponding to Juan's voice are lower in frequency. Decibels measure sound intensity, hue is related to color, and amplitude is related to the loudness of a sound.

Answer:

A. frequency