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Class VI T1 U1 Measurements Textbook Solutions
Unit - 1 MEASUREMENTS
I. Choose the correct answer.
1. The height of a tree can be measured by
a) metre scale c) plastic ruler
b) metre rod d) measuring tape
Ans: d) measuring tape
2. Conversion of 7 m into cm gives _____
a) 70 cm c) 700 cm
b) 7 cm d) 7000 cm
Ans: c) 700 cm
3. Quantity that can be measured is called ____
a) physical quantity c) unit
b) measurement d) motion
Ans: a) physical quantity
4. Choose the correct one
a) km > mm > cm > m b) km > mm > m > cm
c) km > m > cm > mm d) km > cm > m > mm
Ans: c) km > m > cm > mm
5. While measuring the length of an object using a ruler, the position of
your eye should be
a) left side of the point. b) vertically above the point where
the measurement is to be taken.
c) right side of the point d) anywhere according to one’s convenience.
Ans: b) vertically above the point where the measurement is to be taken.
II. Fill in the blanks.
1. SI Unit of length is__________ .
Ans: metre
2. 500 gm = ______kilogram.
Ans: 0.5
3. The distance between Delhi and Chennai can be measured in__________ .
Ans: kilometer
4. 1 m =__________cm.
Ans: 100
5. 5 km = m.
Ans: 5000
III. State True or False. If false, correct the statement.
1. We can say that mass of an object is 126 kg.
Ans: True
2. Length of one’s chest can be measured using metre scale.
Ans: False
Length of one’s chest can be measured using measuring tape.
3. Ten millimetre makes one centimetre.
Ans: True
4. A hand span is a reliable measure of length.
Ans: False
A hand span is not a reliable measure of length.
5. The SI system of units is accepted everywhere in the world.
Ans: True
IV. Complete the analogy.
1. Sugar : Beam balance :: Lime juice :___?
Ans: Measuring Jar
2. Height of a person : cm :: Length of your sharpened pencil lead :___?
Ans: mm
3. Milk : Volume :: Vegetables :___?
Ans: mass
V. Match the following.
VI. Arrange the following in the increasing order of unit.
1 Metre, 1 centimetre, 1 kilometre, and 1 millimetre.
Ans: 1 millimetre, 1 centimetre,1 Metre, 1 kilometre
VII. Answer in a word or two.
1. What is the full form of SI system?
Ans: System International
2. Name any one instrument used for measuring mass.
Ans: Beam balance
3. Find the odd one out.
kilogram, millimetre, centimetre, nanometre
Ans: kilogram
4. What is the SI Unit of mass?
Ans: kilogram
5. What are the two parts present in a measurement?
Ans: Unit and number.
VIII. Find the answer for the following questions within the grid.
1. 10^-3 is one____________.
Ans: millimeter
2. SI Unit of time is ____________.
Ans: second
3. Cross view of reading a measurement leads to ____________.
Ans: error
4. ____________is the one what a clock reads.
Ans: Time
5.____________ is the amount of substance present in an object.
Ans: Mass
6.____________can be taken to get the final reading of the recordings of different students for a single measurement.
Ans: Average
7. ____________is a fundamental quantity.
Ans: Length
8. ____________shows the distance covered by an automobile.
Ans: Odometer
9. A tailor uses ____________ to take measurements to stitch the cloth.
Ans: tape
10. Liquids are measured with this physical quantity____________.
Ans: litre
IX. Answer briefly.
1. Define measurement.
The comparison of unknown quantities with some known quantities is known as measurement. Measurement of a quantity has two parts: a number and a unit.
2. Define mass.
Mass is the measure of the amount of matter in an object. The SI unit of mass is kilogram.
3. The distance between two places is 43.65 km. Convert it into metre and cm.
Distance in meter = 43,650m.
Distance in centimeter = 43,65,000
4. What are the rules to be followed to make accurate measurement with scale?
Always keep the object parallel to the scale.
Start the measurement from ‘0’ of the scale.
Eye must be vertically above the point where the measurement has to be taken
X. Solve the following.
1. The distance between your school and your house is 2250 m. Express this distance in kilometre.
The distance between my school and our house = 2250 km
Conversion of m into km 2250/1000 = 2.25km
2. While measuring the length of a sharpened pencil, reading of the scale at one end is 2.0 cm and at the other end is 12.1 cm. What is the length of the pencil?
Reading is not taken from ‘0’ of the scale.
So, length of the pencil can be calculated by subtracting 2.0 from 12.1
= 12.1 - 2.0
= 10.1 cm
XI. Answer in detail.
1. Explain two methods that you can use to measure the length of a curved line.
Method- I
Draw a curved line AB on a piece of paper
Place a string along the curved line.
Make sure that the string covers every bit of the curved line.
Mark the points where the curved line begins and ends on the string.
Now, stretch the string along the length of a meter scale and measure the distance between the two markings of the string and note it.
This will give the length of a curved line
Method- II
Separate the legs of the divider by 0.5 cm or 1 cm using a ruler.
Place it on the curved line starting from one end.
Mark the position of the other end.
Move it along the line again and again, cutting the line into a number of segments of equal lengths.
The remaining parts of the line can be measured using a scale. Count the number of segments.
Therefore, the length of the line = (Number of segments × Length of each segment) + Length of the leftover part.
2. Fill in the following chart.
