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Revision Notes

Nature’s Treasures

CBSE · Class 6 · Science

Quick revision notes for Nature’s Treasures — CBSE Class 6 Science. Key concepts, formulas, and definitions for last-minute revision.

45 questions24 flashcards5 concepts

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Key Topics to Revise

1

11.1 Air - The Life-Giving Mixture

  • Air is a mixture of gases that surrounds the Earth and is essential for the survival of most living beings
  • Composition of air: Nitrogen (78%), Oxygen (21%), Argon, Carbon dioxide and other gases (1%)
  • Oxygen is necessary for survival - we cannot live without it for even a few minutes
2

11.2 Water - The Precious Resource

  • Water covers about two-thirds of Earth's surface, but most is saline (salty) water in oceans
  • Only a small fraction of freshwater is easily accessible from rivers, lakes, ponds, and wells
  • Water is used for drinking, cooking, bathing, washing, cleaning, growing crops, and industrial purposes
3

11.3 Energy from the Sun - The Ultimate Source

  • The Sun is the main source of energy on Earth
  • All plants and animals are dependent on solar energy
  • Solar energy is used for drying food items, heating water, and generating electricity
4

11.4 Forests - Nature's Green Treasure

  • Forests are large areas with dense growth of various types of plants
  • Forests provide food and shelter to wild animals, birds, and insects
  • Forest products include timber, fruits, herbs, medicines, and many other materials

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Full Notes

Key Concepts

Air is a mixture of gasesWater covers twoThe Sun is the main sourceForests are large areas with denseSoil is formed by the breakdown

Frequently Asked Questions

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Nature’s Treasures covers several key topics that are frequently asked in CBSE Class 6 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Nature’s Treasures — CBSE Class 6 Science?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

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

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