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NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances Pdf Download
NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances guides you in your CBSE Class 6 exam preparation. These NCERT Solutions will help you in understanding the concepts which are very important to understand the advanced topics in your higher studies.
This NCERT Solutions for Class 6 Science Chapter 10 has textbook exercise questions and answers on different modes of transport used to go from one place to another, measurement, SI units of measurement, the relation between milimetre, centimetre, metre and kilometre, motion in a straight line, rectilinear motion, circular motion and periodic motion.
Topics covered in this Chapter are:
- STORY OF TRANSPORT
- SOME MEASUREMENTS
- STANDARD UNITS OF MEASUREMENTS
- CORRECT MEASUREMENT OF LENGTH
- MEASURING THE LENGTH OF A CURVED LINE
- TYPES OF MOTION
Q.1 Give two examples each of modes of transport used on land, water and air.
Ans. Modes of Transport:
- On land : Bus, Car, Train.
- On Water : Boat, Ship.
- On Air :Aeroplane, Helicopter
Q.2 Fill in the blanks:
- One metre is ___________
- Five kilometre is ___________
- Motion of a child on a swing is _____________ .
- Motion of the needle of a sewing machine is _______________
- Motion of wheel of a bicycle is _____________ .
Ans:
- One metre is 100cm
- Five kilometre is 5000m
- Motion of a child on a swing is Periodic (oscillatory) motion .
- Motion of the needle of a sewing machine is Periodic oscillatory
- Motion of wheel of a bicycle is circular .
Q.3 Why can a pace or a footstep not be used as a standard unit of length?
Ans:
We cannot use pace or a footstep as standard unit of length as the size of foot and footstep is not same for every individuals.
Q.4 Arrange the following lengths in their increasing magnitude: 1 metre, 1 centimetre, 1 kilometre, 1 millimetre.
Ans:
1millimetre < 1centimetre < 1metre < 1kilometre
5. The height of a person is 1.65 m. Express it into cm and mm.
Ans:
1.65m = 165cm [1m=100cm]
1.65m = 16500mm [1m= 1000mm]
6. The distance between Radha’s home and her school is 3250 m. Express this distance into km.
Ans:
3250m = 3250/1000 [1km= 1000m]
= 3.250km
Q.7. While measuring the length of a knitting needle, the reading of the scale at one end is 3.0 cm and at the other end is 33.1 cm. What is the length of the needle?
Ans:
The length of a needle is = (33.1-3)cm
= 30.1cm
Q.8 Write the similarities and differences between the motion of a bicycle and a ceiling fan that has been switched on.
Ans:
Both cycle and ceiling fan have motion, that is, they have rotational motion. But wheel of cycle also performs translatory motion along the road.
Q.9 Why would you not like to use a measuring tape made of an elastic material like rubber to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with such a tape?
Ans:
We could not use an elastic measuring tape to measure distance because it has a property of elasticity and accurate measurement can never be taken. So, we could not tell anyone the exact measurement of distance because we ourselves would not be confident about the measured distance.
Q.10 Give two examples of periodic motion.
Ans:
Examples of Periodic motion :
- Swing(Jhoola)
- Pendulum of wall clock
- Needles of wrist watch
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