Lesson: Chapter 4 — Waves and their applications

4.3.3. Characteristics of sound 4 of 5 Reset answers

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Question 4

A guitar string is plucked harder, so it is pulled further from its rest position. What changes?

A The note sounds like a different instrument B The note becomes higher C The note travels faster D The note becomes louder

The right answer is the one marked above.

The note becomes louder. A bigger pull gives the vibration, and the sound wave, a larger amplitude, and loudness depends on amplitude.

The pitch depends on the frequency, which plucking harder does not change.

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