# Class 6 Science Chapter 10 Motion and Measurement Questions

Class 6 Science Chapter 10 Motion and Measurement of Distances Ncert Solutions are provided here. NCERT Intext and End Exercise questions of Class 6 Science Chapter 10 Motion and Measurement of Distances.

Contents

## Class 6 Science Chapter 10 : Motion and Measurement of Distances

Motion and Measurement of Distances is the tenth chapter of NCERT Text book of Class 6 Science. The end exercise and intext questions are comprised of the topics – Time, Distance, Standard Units, Correct Measurement of length, Measuring the length of curved line, etc

### NCERT Solutions Class 6 Science Chapter 10 : Motion and Measurement of Distances

Ques. 1 : Give two examples each, of modes of transport used on land, water and air.
Ans. Land Transport : Bus, Motorcycle, Cycle, Train, Car
Water Transport : Boat, Ship
Air Transport : Aeroplane, Helicopter

Ques. 2 : Fill in the blanks:
(i) One metre is ______ cm.
Ans. 100 cm
One metre is 100 cm

(ii) Five kilometre is __________ m.
Ans. 5000 m
Five kilometre is 5000 m

(iii)Motion of a child on a swing is ________________.
Ans. Periodic Motion
Motion of a child on a swing is Periodic Motion.

(iv)Motion of the needle of a sewing machine is ___________________.
Ans. Periodic Motion
Motion of the needle of a sewing machine is Periodic Motion.

(v) Motion of wheel of a bicycle is______________ .
Ans. Circular Motion
Motion of wheel of a bicycle is Circular Motion.

Ques. 3 : Why can a pace or a footstep not be used as a standard unit of length ?
Ans.
A pace or a footstep should not be used a standard unit of length because the size of footstep varies from person to person .This will lead to confusion while measuring the lengths by different persons. We should use International System of units ( SI Units )

Ques. 4 : Arrange the following lengths in their increasing magnitude:
1 metre, 1 centimetre, 1 kilometre,1 millimetre.
Ans. 1 millimetre < 1 centimetre < 1 metre < 1 kilometre

Ques. 5 : The height of a person is 1.65 m. Express it into cm and mm
Ans.
Height of person = 1.65 m.
we know that 1 m is equal to 100cm and 1 m is equal to 1000 mm.
So 1.65 m = 1.65 * 100 = 165 cm.
Also 1.65 m = 1.65*1000 = 1650 mm

Ques. 6 : The distance between Radha’s home and her school is 3250 m. Express this distance into km.
Ans. The distance between Radha’s home and her school is 3250 m .
We know that 1000 m is equal to 1 km
Therefore 3250 m is equal to 3.250 km
1000 m = 1 km
1 m = 1 / 1000 km
3250 m = ( 1/1000) * 3250 km = 3.250 km

Ques. 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.
One end of the scale is 3.0 cm. The other end of scale is 33.1 cm .The length of the needle is 33.1 – 3.0 = 30.1 cm

Ques. 8 : Write the similarities and differences between the motion of a bicycle and a ceiling fan that has been switched on.
Ans. Similarities between the motion of bicycle and a ceiling fan is that both shows the circular motion .
Differences between the motion of bicycle and a ceiling fan is that a bicycle has a translation motion whereas the ceiling fan does not have translation motion.

Translation motion : A motion in which all the points of a moving body move uniformly in the same of line or direction.

Ques. 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 should not use a measuring tape made of an elastic material like rubber to measure distance because its length is not fixed.

If we measure a distance with such a tape , we have to tell how much it had been stretched during the measurement which is very difficult.

Also the stretched length is not constant . It depends on force. Measurement would also vary if different person measure the same distance.

Ques. 10 : Give two examples of periodic motion.
Ans. Examples of Periodic Motion –

• Motion of a swing.
• Motion of earth around the sun.
• Oscillation of a pendulum.