Questions: Unit Exam - Sound Two notes are an "octave" apart when the two are identical one is twice as loud as the other one travels twice as fast as the other one has twice the frequency of the other

Unit Exam - Sound Two notes are an "octave" apart when the two are identical one is twice as loud as the other one travels twice as fast as the other one has twice the frequency of the other
Transcript text: Unit Exam - Sound Two notes are an "octave" apart when the two are identical one is twice as loud as the other one travels twice as fast as the other one has twice the frequency of the other
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Solution

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Solution Steps

Step 1: Understanding the Concept of an Octave

An octave in music is a term used to describe the interval between one musical pitch and another with double its frequency. This means that when two notes are an octave apart, the frequency of one note is exactly twice the frequency of the other.

Step 2: Analyzing the Options
  • The first option, "the two are identical," is incorrect because identical notes have the same frequency, not double.
  • The second option, "one is twice as loud as the other," is incorrect because loudness is related to amplitude, not frequency.
  • The third option, "one travels twice as fast as the other," is incorrect because the speed of sound is constant in a given medium and does not depend on frequency.
  • The fourth option, "one has twice the frequency of the other," is correct because it matches the definition of an octave.

Final Answer

\[ \boxed{\text{one has twice the frequency of the other}} \]

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