Measurement and Measuring Instruments Book Back Questions

9th Standard

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Science

Time : 01:00:00 Hrs
Total Marks : 35
    4 x 1 = 4
  1. Rulers, measuring tapes and metre scales are used to measure

    (a)

    Mass

    (b)

    Weight

    (c)

    Time

    (d)

    Length

  2. 1 metric ton is equal to

    (a)

    100 quintals

    (b)

    10 quintals

    (c)

    1/10 quintals

    (d)

    1/100 quintals

  3. Distance between Chennai and Kanyakumari can be found in

    (a)

    Kilometres

    (b)

    Metres

    (c)

    Centimetres

    (d)

    Millimetres

  4. Which among the following is not a device to measure mass

    (a)

    Spring balance

    (b)

    Beam balance

    (c)

    Physical balance

    (d)

    Digital balance

  5. 3 x 1 = 3
  6. The thickness of a cricket ball is measured by _______

    ()

    Vernier Caliper

  7. The radius of a thin wire is measured by ________

    ()

    Screw gauge

  8. A physical balance measures small differences in mass up to ______

    ()

    1 milligram

  9. 3 x 1 = 3
  10. In everyday life, we use the term weight instead of mass.

    (a) True
    (b) False
  11. A physical balance is more sensitive than a beam balance as it can accurately measure even a very small mass, even milligram

    (a) True
    (b) False
  12. One Celsius degree is an interval of 1K and zero degree Celsius is 273.15 K

    (a) True
    (b) False
  13. 5 x 1 = 5
  14. Digital balance

  15. (1)

    Digital Clock

  16. Temperature

  17. (2)

    Thermometre

  18. Mass

  19. (3)

    Beam balance

  20. Length

  21. (4)

    Ruler

  22. Time

  23. (5)

    Gold ornaments

    3 x 2 = 6
  24. What is the full form of SI system?

  25. What do you know about pitch of screw gauge?

  26. Convert : 104°F in to Celsius scale.

  27. 3 x 3 = 9
  28. Write the need of a standard unit

  29. What is the measuring unit of the thickness of a plastic carry bag?

  30. How will you measure the least count of vernier caliper ?

  31. 1 x 5 = 5
  32. Inian and Ezhilan argue about the light year. Inian tells that it is 9.46 × 1015 m and Ezhilan argues that it is 9.46 × 1012 km. Who is right? Justify your answer.

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