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How Things Work

CBSE · Class 4 · EVS

Complete topic list for How Things Work in CBSE Class 4 EVS. Key concepts, sub-topics, and what to focus on for board exams.

44 questions64 flashcards5 concepts

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4 Topics · CBSE Class 4 EVS

Topics in How Things Work

1

Spinning Things

  • Some objects like coins and bangles spin, while erasers do not spin properly.
  • The first spinner with a hole at the centre appears the same from all sides and remains upright while spinning.
  • A square spinner appears circular while spinning.
2

Floating and Sinking

  • Floating or sinking of an object cannot be decided just by whether it is heavy or light.
  • Some heavy objects like an iron nail sink, while lighter ones like a leaf float.
  • Changing the shape of an object can make it float or sink.
3

Making and Improving Boats

  • Paper boats can be made after rain using old newspapers.
  • Different boats can float differently in water.
  • Some boats are strong, some break easily, some tip over easily, and some keep better balance.
4

Observing and Thinking

  • Ravi notices that a spinner slows down and eventually stops.
  • Questions help in learning about how things work.
  • The first spinner stays upright, but the second spinner does not behave the same way.

Key Concepts

Central concept: How things around us spin, float, sink, and are made

Spinning objectsSpinner balanceCharkhaLattuFloating and sinkingShape and water movementPaper boatsMaking things

Frequently Asked Questions

What are the important topics in How Things Work for CBSE Class 4 EVS?
How Things Work covers several key topics that are frequently asked in CBSE Class 4 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in How Things Work — CBSE Class 4 EVS?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and 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.

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All 10 chapters — CBSE Class 4 EVS Syllabus

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