Heat Model Question Paper

6th Standard

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Science

Time : 01:00:00 Hrs
Total Marks : 40
    3 x 1 = 3
  1. When an object is heated, the molecules that make up the object

    (a)

    begin to move faster

    (b)

    lose energy

    (c)

    become heavier

    (d)

    become lighter

  2. The unit of heat is

    (a)

    newton

    (b)

    joule

    (c)

    volt

    (d)

    celsius

  3. An iron ball at 50°C is dropped in a mug containing water at 50o C. The heat will

    (a)

    flow from iron ball to water.

    (b)

    not flow from iron ball to water or from water to iron ball.

    (c)

    flow from water to iron ball.

    (d)

    increase the temperature of both.

  4. 3 x 1 = 3
  5. Heat flows from a ____________ body to a ____________ body.

    ()

    heater

  6. The SI unit of temperature is ___________________.

    ()

    kelvin

  7. Two bodies are said to be in the state of thermal______________ if there is no transfer of heat taking place.

    ()

    equilibrium

  8. 3 x 1 = 3
  9. Heat is a kind of energy that flows from a hot body to a cold body.

    (a) True
    (b) False
  10. Thermal expansion is always a nuisance.

    (a) True
    (b) False
  11. The unit of heat and temperature are the same.

    (a) True
    (b) False
  12. 5 x 1 = 5
  13. Heat

  14. (1)

    0oC

  15. Temperature

  16. (2)

    100oC

  17. Thermal Equilibrium

  18. (3)

    kelvin

  19. Ice cube

  20. (4)

     

    No heat flow

  21. Boiling water

  22. (5)

    joule

    3 x 2 = 6
  23. Heat : Joule :: Temperature : _____________

  24. ice cube : 0oC :: Boiling water :_____________.

  25. Total Kinetic Energy of molecules: Heat :: Average Kinetic Energy : __________.

  26. 2 x 2 = 4
  27. What is temperature?

  28. What do you understand by thermal equilibrium?

  29. 2 x 3 = 6
  30. What difference do you think heating the solid will make in their molecules ?

  31. Distinguish between heat and temperature.

  32. 2 x 5 = 10
  33. Explain thermal expansion with suitable examples.

  34. Suppose your normal body temperature were lower than what it is. How would the sensation of hot and cold change?

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