CBSE Class 5 Science – Sound and Noise

Chapter Overview

Sound plays an essential role in our daily lives. From communication to entertainment, we experience sound in different ways. However, not all sounds are pleasant. Some sounds can be disturbing, which we refer to as noise. In this chapter, we will understand the production, propagation, and effects of sound and noise.

Important Keywords

• Vibration: The back-and-forth movement of an object that produces sound.
• Frequency: The number of vibrations per second.
• Pitch: How high or low a sound is.
• Amplitude: The height of a sound wave, determining loudness.
• Echo: The reflection of sound.
• Noise Pollution: Unwanted or harmful sound that affects health and the environment.