Amplitude determines volume and frequency determines pitch.

Great question! In addition to the frequency of vibrations determining the pitch of the sound, the amplitude of the vibrations determines the loudness (or volume) of the sound. 1. **Amplitude of Vibrations**: Amplitude refers to the size or strength of the vibrations. When the amplitude is larger, the sound wave has more energy and produces a louder sound. Conversely, smaller amplitude vibrations produce a quieter sound. 2. **Energy**: The energy of the vibrations also plays a key role. More energetic vibrations typically produce louder sounds because they move more air particles, increasing the sound wave's intensity. To summarize: - **Frequency** (number of vibrations per second) affects the pitch of the sound. - **Amplitude** (size or strength of vibrations) affects the loudness of the sound. For a practical example, think of a guitar string. Plucking it gently (low amplitude) produces a soft sound. Plucking it harder (high amplitude) makes it vibrate more vigorously and produces a louder sound. The pitch remains the same if the string tension and length remain constant, but the loudness changes with the amplitude of the pluck!