How Things Work

CBSE · Class 4 · EVS

Quick revision notes for How Things Work — CBSE Class 4 EVS. Key concepts, formulas, and definitions for last-minute revision.

45 questions20 flashcards4 concepts

Key Topics to Revise

Spinning Objects

Not all objects can spin properly - some spin well while others don't
Objects that are the same from all sides (like coins and bangles) spin better
The position of the hole or center point affects how well an object spins

Floating and Sinking

Objects can either float on water or sink in water
Floating and sinking doesn't depend only on weight - light objects can sink and heavy objects can float
Shape plays an important role in floating and sinking

Making and Testing Objects

Paper boats can be made from newspapers and tested in water
Different boat designs have different strengths and weaknesses
Some boats tip over easily while others maintain better balance

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Full Notes

Key Concepts

Not all objects can spin effectivelyWhether an object floats or sinksThe same material can floatDifferent materials behave differently in water

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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?

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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Happy and Healthy Living

Next Chapter

How Things are Made

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