Skip to main content
Super TutorResources
Chapter 11 of 12
Revision Notes

Light: Shadows and Reflections — Revision Notes

CBSE · Class 7 · Science

Light: Shadows and Reflections revision notes for CBSE Class 7 Science: 4 topics in quick points. Part of the CBSE Class 7 Science syllabus.

41 questions68 flashcards5 concepts

Interactive on Super Tutor

Studying Light: Shadows and Reflections? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

Try Super Tutor — Free

Free trial, no card needed.

Key Topics to Revise

1

1. Sources of Light

  • The Sun is the main source of natural light on Earth.
  • The Sun emits its own light, so it is a luminous object.
  • Stars, lightning, natural fire, and certain animals also emit their own light.
2

2. Does Light Travel in a Straight Line?

  • Observations from the matchbox activity suggest that light travels in a straight line.
  • The candle-flame-through-pipe activity also shows that light travels in a straight line.
  • A candle flame can be seen through a straight pipe, but not through a bent pipe.
3

3. Transparent, Translucent, and Opaque Materials

  • Light passes almost completely through transparent materials.
  • Light passes partially through translucent materials.
  • Light does not pass at all through opaque materials.
4

4. Shadow Formation

  • A shadow is a dark patch formed where light does not reach because an opaque object blocks it.
  • To observe a shadow, three things are needed: a light source, an opaque object, and a screen.
  • Walls, floors, and the ground can act as screens.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

Objects that emit their own lightLight follows a straight pathTransparent materials let light pass throughA shadow is a dark patchWhen light strikes 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 Revision Notes

For serious students

Get the full Light: Shadows and Reflections chapter — start free.

Quizzes, flashcards, an AI doubt solver and a study plan for CBSE Class 7 Science. Free to start, no card needed.

Try Super Tutor Free
Try this chapter free