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Measurement of Time and Motion

CBSE · Class 7 · Science

Flashcards for Measurement of Time and Motion — CBSE Class 7 Science. Quick Q&A cards covering key concepts, definitions, and formulas.

102 questions74 flashcards5 concepts

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74 Flashcards
Card 1History of time measurement

How was time measured before modern clocks and watches?

Answer

Time was measured using natural and mechanical timekeeping devices such as sundials, water clocks, hourglasses, candle clocks, pendulum clocks, quartz clocks, and atomic clocks. Early timekeeping used

Card 2समय मापन का इतिहास

आधुनिक घड़ियों और घड़ी से पहले समय कैसे मापा जाता था?

Answer

समय को प्राकृतिक और यांत्रिक समय रखने वाले उपकरणों जैसे कि धूपघड़ी, पानी की घड़ियाँ, रेत घड़ी, मोमबत्ती घड़ी, पेंडुलम घड़ी, क्वार्ट्ज घड़ी और परमाणु घड़ी का उपयोग करके मापा जाता था। प्रारंभिक समय रखने

Card 3Ancient time devices

What is a sundial?

Answer

A sundial is an ancient time measuring device that uses the shadow of an object cast by sunlight. It shows local or solar time, so a correction is needed to find Indian Standard Time.

Card 4प्राचीन समय के उपकरण

घड़ी क्या होती है?

Answer

घड़ी एक प्राचीन समय मापने का उपकरण है जो सूर्य के प्रकाश द्वारा डाली गई किसी वस्तु की छाया का उपयोग करता है। यह स्थानीय या सौर समय दिखाता है, इसलिए भारतीय मानक समय खोजने के लिए एक सुधार की आवश्यकता हो

Card 5Sundial and time zones

Why does a sundial not give Indian Standard Time directly?

Answer

A sundial measures local solar time, which depends on the Sun's position at a place. Indian Standard Time is a standard time used for the whole country, so a correction is needed.

Card 6घड़ी और समय क्षेत्र

सूरजघड़ी सीधे भारतीय मानक समय क्यों नहीं देती है?

Answer

घड़ी स्थानीय सौर समय को मापती है, जो किसी स्थान पर सूर्य की स्थिति पर निर्भर करती है। भारतीय मानक समय पूरे देश के लिए इस्तेमाल किया जाने वाला मानक समय है, इसलिए इसमें सुधार की आवश्यकता है।

Card 7Ancient time devices

What is a water clock?

Answer

A water clock is an ancient time measuring device that uses the flow of water out of or into a vessel to measure time.

Card 8प्राचीन समय के उपकरण

जल घड़ी क्या होती है?

Answer

जल घड़ी एक प्राचीन समय मापने वाला उपकरण है जो समय को मापने के लिए किसी पात्र से बाहर या उसमें पानी के प्रवाह का उपयोग करता है।

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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?
Understand the core concepts first, then work through the 102 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
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There are 74 flashcards for Measurement of Time and Motion covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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