NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances

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Updated at 2021-02-11


NCERT solutions for class 6 Science Chapter 10 Motion And Measurement Of Distances Exercise

Q.1 Give two examples each, of modes of transport used on land, water and air.



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

Land- Bus, Car
Water- Boat, Ship
Air- Helicopter, Airoplane

Q.2 Fill in the blanks:
(i) One metre is ______________ cm.
(ii) Five kilometer 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______________.



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

(i) One metre is 100 cm.
(ii) Five kilometers is 5000 m.
(iii) The motion of a child on a swing is periodic.
(iv) The motion of the needle of a sewing machine is periodic.
(v) The motion of the wheel of a bicycle is circular.

Q.3 Why can a pace or a footstep not be used as a standard unit of length?



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

Pace or a footstep cannot be used as a standard unit of length because it varies from person to person.

Q.4 Arrange the following lengths in their increasing magnitude: 1 metre, 1 centimeter, 1 kilometer, 1 millimeter.



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

1 millimeter, 1 centimeter, 1 metre, 1 kilometer

Q.5 The height of a person is 1.65 m. Express it into cm and mm.



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

1.65m = 165 cm = 1650 mm

Q.6 The distance between Radha’s home and her school is 3250 m. Express this distance into km.



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

1km = 1000 m
Hence 3250 m = 3.25 km

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?



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

Length of needle = 33.1 cm – 3.0 cm = 30.1 cm.

Q.8 Write the similarities and differences between the motion of a bicycle and a ceiling fan that has been switched on.



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

Similarities: - Wheel of a bicycle and ceiling fan both shows circular motion.
Differences: - Bicycle moves in rectilinear motion but ceiling fan does not move in rectilinear motion.

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?



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

Elastic tap will not give accurate measurement because it stretches in length and reduces in size when not stretched. While telling the measurement taken with an elastic tape. We have to tell whether the tape was stretched and by how much. This is very difficult.

Q.10 Give two examples of periodic motion.



NCERT Solutions for Class 6 Science Chapter 10 Motion And Measurement Of Distances


Answer :

Pendulum , sea-saw and motion of earth



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