When we talk about sounds, we often describe them as loud or quiet and high or low. However, there are scientific ways to measure sound, and readers learn about them in this insightful look at an important early science topic. Pitch, decibels, waves, and frequency are described in age-appropriate detail, along with many other essential physics terms. The at-level text is broken down into short, clear sentences, and additional visual elements include colorful photographs and a helpful decibel chart. This focused approach to physical science gives readers a sense of how classroom concepts are applied in the larger world.