Q1) Write true or false for each statement :
(a) S.I. unit of temperature is fahrenheit.
(b) Every measurement involves wo things - a number and a unit.
(c) Mass is the measure of quantity of matter.
(d) The S.I. unit of time is hour.
(e) The area can be expressed as the product of length of two sides.
Q2) Fill in the blanks .
(a) The S.I. unit of length is _____ of time is _____ of mass is _____ .
(b) ℃ is the unit of__________.
(c) 1 metre tonne = _____ .
(d) The zero mark in Celsius thermometer is the melting pointb of_____ .
(e) The thermometer used to measure the human body is called the _______thermometer.
(f) The normal temperature of human body is _____ ℃ or, _____ °F.
(g) The _____ of an object is measured with the help of a beam balance.
Q3) Match the following columns :
|Column A||Column B|
|(a) Length of a housing plot||(i) Clock|
|(b) Breadth of a book||(ii) Beam balance|
|(c) Mass of an apple||(iii) Thermometer|
|(d) Period of time for study||(iv) Measuring tape|
|(e) Temperature of a body||(v) Graph paper|
|(f) Surface area of a leaf||(vi) Metre ruler|
Q6) Convert the following quantities as indicated :
(a) 12inch = ft
(b) 1ft = cm
(c) 20cm = m
(d) 4.2m = cm
(e) 0.2km = m
(f) 0.2cm = mm
(g) 1yard = m
(a) Describe in steps how would you measure the length of a pencil using a metre rule. Draw a diagram if necessary.
(b) Explain with an example how you you will use the metre ruler in part (a) if the ends of ruler are broken.
Q8) Name the device which you will use to measure the perimeter of your play ground. Describe in steps how you will use it.
Q9) The diagram below shows a stick placed along a metre RULER. The length of the stick is measured keeping the eye at positions A, B and C.
Q11) Convert the following quantities as indicated :
(a) 200 kg = .............metric tonne
(b) 150 kg = .............quintal
(c) 10lb = ............. kg
(d) 250 g = ............. kg
(e) 0.01 kg = ............. g
(f) 5mg = ............. kg
Q12) Name the instrument which is commonly used to measure the mass of a body. State how is it used ?
Q13) Define one kilogram, the S.I. unit of mass. How is it related to (i) quintal (ii) metric tonne and (iii) gram?
Q14) Name and define the S.I. unit of time. How is it related to (i) minute (ii) hour, (iii) day and (iv) year ?
Q19) Name the instrument used for measuring of the temperature of a person. Draw its labelled neat diagram.
Q21) What is a clinical thermometer ? State its special feature . Draw a labelled neat diagram of a clinical thermometer showing the range of temperature marked on it.
Q22) What is the normal temperature of the human body ? How is it indicated in a clinical thermometer ?
Q23) Can a clinical thermometer be used to measure the temperature of the boiling water ? Give reason for your answer.
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