Chapter 10 Motion and Measurement of Distances

Chapter 10 Motion and Measurement of Distances

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


Q. – Give two examples each, of modes of transport used on land, water and air?


Cars  and Buses are the two modes of land transportation.

Cruise and boats are two types of water transportation.

Helicopters and aeroplanes are two types of air transport.


Q. – Fill in the blanks:


(i) One metre is ______________ cm.

(ii) Five kilometre is ______________ m.

(iii)Motion of a child on a swing is ______________.

(iv) Motion of the needle of a sewing machine is ______________.

(v) Motion of wheel of a bicycle is______________.


  1. 100 cm
  2. 5000 m
  3. Periodic motion
  4. Periodic motion
  5. Circular motion

Q. – Why can a pace or a footstep not be used as a standard unit of length?


The length of a pace or a footstep differs from one person to another. If we use the pace/footstep as the standard unit to calculate length, then two measured quantities will not be the same. That’t why we cannot use pace/footstep as a standard unit of length.


Q. – Arrange the following lengths in their increasing magnitude:

1 metre, 1 centimetre, 1 kilometre,1 millimetre.


1 millimetre > 1 centimetre > 1 metre > 1 kilometre


Q. – The height of a person is 1.65 m. Express it into cm and mm.


We know that 1 m = 100 cm ,so 1.65 m = 1.65 *100 = 165 cm

We know that 1 cm = 10 mm

So 1.65 m = 1.65 * 100 * 10 = 1650 mm


Q. -The distance between Radha’s home and her school is 3250 m. Express this distance into km.


We know that 1km = 1000 m

3250 m = 3250/1000 km = 3.25 km


Q. – 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?

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