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Measurement of Time and Motion

CBSE · Class 7 · Science

Quick revision notes for Measurement of Time and Motion — CBSE Class 7 Science. Key concepts, formulas, and definitions for last-minute revision.

45 questions24 flashcards5 concepts

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Key Topics to Revise

1

8.1 Measurement of Time

  • Humans have always been interested in measuring time by observing repeating natural events like sunrise, sunset, moon phases, and seasons
  • Ancient time-measuring devices included sundials (using shadows), water clocks (using water flow), hourglasses (using sand flow), and candle clocks (using candle burning)
  • The Samrat Yantra at Jantar Mantar, Jaipur is the world's largest stone sundial, measuring 27 metres high with accuracy of 2 seconds
2

8.2 Speed and Motion

  • Speed determines how fast or slow an object is moving
  • Faster objects cover more distance in the same time interval
  • Speed is calculated by dividing total distance by total time taken
3

8.3 Uniform and Non-uniform Linear Motion

  • Linear motion occurs when object moves along a straight line
  • Uniform linear motion: object moves with constant speed along straight line
  • Non-uniform linear motion: object's speed changes while moving along straight line

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Key Concepts

Ancient people used natural cycles likeA simple pendulum consists ofSpeed is defined as the distanceWhen an object moves alongWhen an object moves along

Frequently Asked Questions

What are the important topics in Measurement of Time and Motion for CBSE Class 7 Science?
Measurement of Time and Motion covers several key topics that are frequently asked in CBSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Measurement of Time and Motion — CBSE Class 7 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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