Samacheer Kalvi 6th Science Solutions Chapter 1 Pdf
Tamilnadu Board Samacheer Kalvi 6th Science Solutions Chapter 1: Tamilnadu State Board Solution Class 6 Science Chapter 1 – Measurements.
Samacheer Kalvi 6th Science Solutions Chapter 1: Overview
Board 
Samacheer Kalvi 
Class 
6 
Subject 
Science 
Chapter 
1 
Chapter Name 
Measurements 
Samacheer Kalvi 6th Science Solutions Chapter 1 Pdf
I.) Choose the correct answer
1.) The height of a tree can be measured By
a) Metre scale
b) Plastic ruler
c) Metre rod
d) Measuring tape
Answer: Measuring tape
Solution: Measuring tape is the most suitable one among others as Plastic ruler and metre scale are used for Measuring small length and using metre rod vertically along the height of the tree would be difficult.
2.) Conversion of 7 m into cm gives _____
a) 70 cm
b) 7 cm
c) 700 cm
d) 7000 cm
Answer: 700cm
Solution: 1m = 100cm
So, 7×100= 700cm
3.) Quantity that can be measured is Called ____
a) Physical quantity
b) Measurement
c) Unit
d) Motion
Answer: Unit
Solution: Unit is a standard measure of any 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
Answer: km > m > cm > mm
Solution: 10mm = 1cm, 100cm = 1m , 1000m= 1km
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) Any where according to one’s Convenience.
Answer: Vertically above the point where The measurement is to be taken.
Solution: It is necessary to be vertically above the point where the measurement is to be taken as Measuring from either right or left side of the point will lead to more errors.
II.) Fill in the blanks
1.) SI Unit of length is ___meter___
2.) 500 gm = ___0.5_____kilogram.
3.) The distance between Delhi and Chennai can be measured in __kilometer___
4.) 1 m = __100____cm.
5.) 5 km = ___5000___ m.
III.) State True or False. If False correct the statement.
1.) We can say that mass of an object is 126 kg.
Answer: True
2.) Length of one’s chest can be measured Using metre scale.
Answer: false, The length of one’s chest can be measured using measuring tape.
3.) Ten millimetre makes one centimetre.
Answer: True
4.) A hand span is a reliable measure of Length.
Answer: False, it is not reliable as it differs from person to person.
5.) The SI system of units is accepted Everywhere in the world.
Answer: True
IV.) Complete the analogy.
1.) Sugar : Beam balance :: Lime juice :___?
Answer: Electronic balance
2.) Height of a person : cm :: Length of Your sharpened pencil lead :___?
Answer: mm
3.) Milk : Volume :: Vegetables :___?
Answer: Mass
V.) Match the following.
1.) Length of the fore arm

a.) metre

2.) SI unit of length.  b.) second 
3.) Nano  c.) 103 
4.) SI Unit of time  d.) 10–9 
5.) Kilo  e.) Cubit 
Answer:
1.) Length of the fore arm.  a.) Cubit 
2.) SI unit of length.  b.) Meter 
3.) Nano  c.) 10–9 
4.) SI Unit of time  d.) Second 
5.) Kilo  e.) 103 
VI.) Arrange the following in the increasing order of unit.
1 Metre, 1 centimetre, 1 kilometre, and 1 millimetre.
Answer: 1mm < 1cm < 1m < 1km
VII.) Answer in a word or two.
1.)What is the full form of SI system?
Answer: International system of units
2.) Name any one instrument used for Measuring mass.
Answer: Beam balance
3.) Find the odd one out.
Kilogram, millimetre, centimetre, Nanometre
Answer: Nanometre
4.) What is the SI Unit of mass?
Answer: Kilogram
5.) What are the two parts present in a Measurement?
Answer: Unit and number
VIII.) Find the answer for the following questions within the grid.
1.) 103 is one __Millimetre____
2.) SI Unit of time is ___Second_______
3.) Cross view of reading a measurement Leads to __error________
4.) ___Time______ is the one what a clock Reads.
5.) ___Mass_____ is the amount of Substance present in an object.
6.) ___Average_____ can be taken to get The final reading of the recordings Of different students for a single Measurement.
7.) ___Length_______ is a fundamental Quantity.
8.) ___Odometer_______ shows the distance Covered by an automobile
9.) A tailor uses ____tape________ to take Measurements to stitch the cloth.
10.) Liquids are measured with this Physical quantity.
Answer: Litre
IX Answer briefly.
1.) Define measurement.
Answer: The process of comparison between an unknown quantity and a known or standard quantity is called Measurement.
2.) Define mass.
Answer: When the amount of substance present in an object is measured , it is called mass.
3.) The distance between two places is 43.65 km. Convert it into metre and cm.
Answer: 1km = 1000m , 1m = 100cm
43.65× 1000= 43650m , 43650× 100= 4365000cm.
4.) What are the rules to be followed to Make accurate measurement with scale?
Answer: a) It is important that the object that is to be measured should be kept parallel to the scale.
b) In Measuring an object, always take ‘0’ of the scale as the starting point.
X.) Solve the following.
1.) The distance between your school and Your house is 2250 m. Express this Distance in kilometre.
Answer: 1000m = 1km
2250÷1000m = 2.250km
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?
Answer: Point A = 2cm, point B= 12.1cm
Length of the pencil = 12.1 – 2 = 10.1cm.
XI.) Answer in detail.
1.) Explain two methods that you can use To measure the length of a curved line.
Answer: a) Measuring with the help of a string. Here, a string is placed along the curved line and then the starting and end points of the curved line are marked on the string. Now the string is stretched along the length of a meter scale and the distance between the two points on the string are measured.
b) another method is by using a divider. After a curved line has been drawn, AB , on the paper. With the help of a ruler ,the legs of the divider are separated 0.5cm or 1cm. Place one end of the divider at one point, A and then mark the position of the other end. Repeating this along the curved line and equally dividing the line into segments. Using a scale, the remaining parts of the line can be measured. And finally the total number of segments are counted.
2.) Fill in the following chart.
Property 
Definition  Basic Unit 
Instrument used for measuring 
Length 
The measure of the relative distance between two points.  Meter (m)  Measuring tape, ruler, scales. 
Mass 
When the amount of substance present in an object is measured , it is called mass.  Kilogram (kg)  Beam balance, electronic balance. 
Volume 
Volume refers to the space occupied by a three dimensional object.  m3  Graduated cylinders 
Time 
It is defined as a fundamental quantity, that is read by the clocks.  Seconds  Clocks 