Work , energy and Power Important questions | Grade VIII

Important questions for Work Energy and Power | Grade VIII

  1. Define work with its unit and formula .
  2. Define 1 joule work .
  3. What are the two conditions for work done ?
  4. Write the types of work .
  5. Define work against gravity .
  6. Define work against friction .
  7. A man is standing with a load on his head is not work in science , why ?
  8. Define energy .
  9. Define 1 joule of energy .
  10. Write the form of energy .
  11. Define light , heat , sound , electrical , magnetic chemical , nuclear and mechanical energy .
  12. Define kinetic and mechanical energy with examples .
  13. What are the two factor in which K.E. depends ?
  14. What are the factor in which P.E. depends ?
  15. When a body lifted from ground gains energy , How ?
  16. Energy and work done has same unit , why ?
  17. Write the principle of conservation of energy .
  18. Define transformation of energy .
  19. Write the differences between force and work , work and power .
  20. Define power .
  21. Define 1 watt power .
  22. 60 watt is written in electric bulb . What does it mean ?
  23. The electric motor has power of 150 watt . What does it mean ?
  24. Write the relationship between Horsepower and watt .
  25. Write the relationship between Horsepower and megawatt .

Some useful links : Magic of Words complete summary class 11 , summary of Heritage of words all chapters

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