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Chapter Summary

Light: Shadows and Reflections — Chapter Summary

CBSE · Class 7 · Science

Summary of Light: Shadows and Reflections for CBSE Class 7 Science. Part of the CBSE Class 7 Science syllabus.

41 questions68 flashcards5 concepts

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Overview

Light is essential for seeing objects. The Sun is the main source of natural light on Earth, and objects that emit their own light are called luminous objects. The Moon is non-luminous because it does not produce its own light; it reflects sunlight. Light also travels in a straight line, which helps

Key Concepts

Objects that emit their own light

Objects that emit their own light are luminous objects. The Sun, stars, lightning, natural fire, and certain animals are luminous. The Moon is non-lum

Light follows a straight path

Light follows a straight path. This is shown by the matchbox activity, the candle flame seen through a straight pipe, and the laser beam moving throug

Transparent materials let light pass through

Transparent materials let light pass through almost completely. Translucent materials let some light pass through. Opaque materials do not let light p

A shadow is a dark patch

A shadow is a dark patch formed when an opaque object blocks light. A shadow needs a light source, an opaque object, and a screen. Shadow shape, size,

When light strikes a mirror

When light strikes a mirror or shiny surface and changes direction, the process is called reflection. A plane mirror is a flat mirror that reflects li

Learning Objectives

  • Identify luminous and non-luminous objects
  • Understand that light travels in a straight line
  • Classify materials as transparent, translucent, or opaque
  • Explain how shadows are formed and what affects their shape and size
  • Describe reflection of light from a mirror

Frequently Asked Questions

What are the important topics in Light: Shadows and Reflections for CBSE Class 7 Science?
Key topics in Light: Shadows and Reflections include Sources of Light, Does Light Travel in a Straight Line?, Transparent, Translucent, and Opaque Materials, Shadow Formation. Study these first, then practise questions on each for Class 7 exams.
How should I revise Light: Shadows and Reflections for Class 7 exams?
Learn the core ideas first, then work through the 41 practice questions on Light: Shadows and Reflections. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Light: Shadows and Reflections

All CBSE Class 7 Science Chapter Summary

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