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7th Science - Heat and Temperature Model Question Paper

Heat and Temperature Model Question Paper

7th Standard

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Science

Time : 01:00:00 Hrs
Total Marks : 50
    4 x 1 = 4

  1. International unit of measuring temperature is _______.

    (a)

    Kelvin

    (b)

    Fahrenheit

    (c)

    Celsius

    (d)

    Joule

  2. The body temperature of a healthy man is; ________.

    (a)

    00C

    (b)

    370C

    (c)

    980C

    (d)

    1000C

  3. Mercury is often used in laboratory thermometers because it _______.

    (a)

    is a harmless liquid

    (b)

    is silvery in colour and is attractive in appearance

    (c)

    Expands uniformly

    (d)

    is a low cost liquid

  4. Which of the following temperature conversions is incorrect
     K ( Kelvin) = 0C ( Celsius) + 273.15

    (a)
    0C K
    -273.15 0
    (b)
    0C K
    -123. +150.15
    (c)
    0C K
    +127. +400.15
    (d)
    0C K
    + 450 + 733.15
    5. 3 x 1 = 3

  5. Doctor uses _________ thermometer to measure the human body temperature.

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    Clinical

  6. At room temperature Mercury is in _______ state.

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  7. The common laboratory thermometer is a _______ thermometer.

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    Celsius

    8. 4 x 1 = 4

  8. Clinical thermometer

    9. (1)

    Kink

  9. Heat

    10. (2)

    100°C

  10. Boiling point of water

    11. (3)

    A form of energy

  11. Melting point of water

    12. (4)

    0oC
    5 x 2 = 10

  12. Temperature of Srinagar (J&K) is — 40C and in Kodaikanal is 30C which of them has greater temperature? What is the difference between the temperatures of these two places?

  13. Jyothi was prepared to measure the temperature of hot water with a clinical thermometer. Is it right or wrong? Why?

  14. A clinical thermometer is not used to measure the temperature of air, why?

  15. What is the use of kink in clinical thermometer?

  16. Why do we jerk a clinical thermometer before we measure the body temperature?

    17. 3 x 3 = 9

  17. Why do we use Mercury in thermometers? Can water be used instead of mercury? What are the problems in using it?

  18. Swathi kept a laboratory thermometer in hot water for some time and took it out to read the temperature. Ramani said it was a wrong way of measuring temperature. Do you agree with Ramani? Explain your answer.

  19. The body temperature of Srinath is 990F. Is he suffering from fever? If so, why?

    20. 4 x 5 = 20

  20. Draw the diagram of a clinical thermometer and label its parts.

  21. State the similarities and differences between the laboratory thermometer and the clinical thermometer.

  22. What must be the temperature in Fahrenheit, so that it will be twice its value in Celsius?

  23. Go to a veterinary doctor (a doctor who treats animals). Discuss and find out the normal temperature of domestic animals and birds.

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