Sound is measured in Hz (hertz). What is Hz the rate of?Group of answer choicesamplitudevelocityfrequencyduration

Analysis of the Question

The question is asking about the meaning of the unit "Hz" in the context of sound.

Relevant Concepts

1. Hertz: The unit is a measure of frequency.
2. Frequency: This refers to the number of cycles of a periodic wave that occur in a unit of time, typically measured in cycles per second.

Explanation

1. Amplitude: This refers to the maximum extent of a vibration or oscillation, measured from the position of equilibrium. It is not what Hz measures.
2. Velocity: This typically describes the speed of sound but is not the unit measured in Hz.
3. Duration: This refers to the time length of an event and is not associated with frequency.
4. Frequency: This is precisely what Hz measures—it indicates how many cycles occur per second.

Conclusion

The correct answer is frequency, as Hertz (Hz) is the unit used to quantify frequency in waves, including sound waves.