Brittany observed that the people having conversations on cell phones are quite loud-spoken,while those having conversations on pay phones were quite soft-spoken.Those using cell phones are producing a higher ____ of sound waves than are those using pay phones.

Question

Quizplus · Accepted Answer

The amplitude of a sound wave refers to the magnitude of the pressure changes produced by the sound. Higher amplitude corresponds to louder sound. Therefore, people using cell phones are producing a higher amplitude (i.e., louder) sound wave than those using pay phones. Frequency, timbre, and wavelength are not directly related to the observed difference in loudness between the two types of phones.

Brittany Observed That the People Having Conversations on Cell Phones