Question

Which characteristic of a sound wave is directly related to the loudness of the sound

Answer 1

Amplitude
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Answer 2

The basic properties of sound are: pitch, loudness and tone. Figure 10.2: Pitch and loudness of sound. Sound B has a lower pitch (lower frequency) than Sound A and is softer (smaller amplitude) than Sound C. The frequency of a sound wave is what your ear understands as pitch.