CBSE Class 5 Science – Light and Shadows

Chapter Overview

Light is a form of energy that enables us to see objects. It travels in a straight line and can be reflected, refracted, or absorbed. Shadows are formed when an opaque object blocks light. Understanding light and shadows helps in various applications such as photography, eclipses, and everyday observations.

Important Keywords

• Opaque: Objects that do not allow light to pass through.
• Transparent: Objects that allow all light to pass through.
• Translucent: Objects that allow some light to pass through.
• Shadow: A dark area formed when an object blocks light.
• Light Source: An object that emits light (e.g., Sun, bulb).
• Reflection: Bouncing back of light from a surface.
• Refraction: Bending of light as it passes through different materials.