The pitch of a sound depends on the frequency of the waves.

The statement is true. The pitch of a sound is determined by the frequency of the waves produced. Let's understand this concept in detail.

Frequency and Pitch:
- Frequency refers to the number of complete cycles or vibrations of a wave that occur in one second. It is measured in Hertz (Hz).
- Pitch, on the other hand, is the perception of the frequency of a sound wave. It is related to how high or low a sound is perceived to be.

Relationship between Frequency and Pitch:
- The higher the frequency of a sound wave, the higher the pitch of the sound we perceive.
- Conversely, the lower the frequency of a sound wave, the lower the pitch of the sound we perceive.

Explanation:
- When an object vibrates, it creates sound waves. These sound waves travel through a medium (such as air) and reach our ears.
- The frequency of these waves determines the pitch of the sound we hear. Higher frequencies result in higher-pitched sounds, while lower frequencies result in lower-pitched sounds.
- For example, a violin string vibrating at a higher frequency will produce a higher-pitched sound compared to the same string vibrating at a lower frequency.

Relation to Musical Instruments:
- Musical instruments are designed to produce specific frequencies or a range of frequencies to create different pitches.
- Instruments like the piano, guitar, and flute have different strings or holes that produce different frequencies when played. This allows them to produce a variety of pitches.
- The musician can control the pitch by changing the frequency of the sound waves produced by altering the length, thickness, or tension of the strings or the size of the holes.

Conclusion:
The pitch of a sound is directly related to the frequency of the waves it produces. Higher frequencies result in higher pitches, while lower frequencies result in lower pitches. This relationship between frequency and pitch is fundamental to our perception of sound and is utilized in various musical instruments to create different notes and melodies.