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Energy — Flashcards

ICSE · Class 7 · Physics

40 flashcards for Energy (ICSE Class 7 Physics) to test yourself on key terms and facts. Sample: "State the definition of energy."

45 questions40 flashcards6 formulas & key relations5 concepts

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40 Flashcards·
Energy basicsWork and energyWork calculationUnits of energyMechanical energy
Card 1Energy basics

State the definition of energy.

Answer

Energy is the capacity to do work.

Card 2Work and energy

State the definition of work done by a force.

Answer

Work done = Force × Distance moved in the direction of force. Formula: W = F × d W is measured in joule, F in newton, and d in metre.

Card 3Work calculation

A force of 5 N moves a body by 3 m in the direction of force. Find the work done.

Answer

Given: Force, F = 5 N Distance, d = 3 m Formula: W = F × d Step 1: W = 5 N × 3 m Step 2: W = 15 N m Step 3: W = 15 J Answer: 15 J…

Card 4Units of energy

State the S.I. unit of work and energy.

Answer

The S.I. unit of work and energy is joule (J). 1 J = 1 N × 1 m…

Card 5Work calculation

A force of 8 N moves a body by 2 m in the direction of force. Find the work done in joules.

Answer

Given: F = 8 N, d = 2 m Formula: W = F × d Step 1: W = 8 N × 2 m Step 2: W = 16 N m Step 3: W = 16 J Answer: 16 J…

Card 6Work calculation

A force of 12 N acts on a body, but the body does not move. How much work is done?

Answer

Given: Force is applied, but distance moved = 0 m Formula: W = F × d Step 1: W = 12 N × 0 m Step 2: W = 0 J Answer: 0 J No motion means no work is done.

Card 7Work and energy

How is energy related to work done on a body?

Answer

When work is done on a body, its energy increases. When a body does work, its energy decreases. So, energy can be stored as a result of work done on the body.

Card 8Mechanical energy

State the definition of potential energy.

Answer

Potential energy of a body is the energy possessed by it due to its state of rest or position.

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Frequently Asked Questions

What are the important topics in Energy for ICSE Class 7 Physics?
Key topics in Energy include Work, Energy, and Units, Forms of Energy, Mechanical Energy: Potential and Kinetic, Conversion of Energy. Study these first, then practise questions on each for Class 7 exams.
How many flashcards are available for Energy?
There are 40 flashcards for Energy covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Energy for Class 7 exams?
Learn the core ideas first, then work through the 45 practice questions on Energy. Revise 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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