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

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Updated at 2021-03-08


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

Q1 ) 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

Q2 ) 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 5000m .

(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 .

Q3 ) 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 everyone's pace or a footstep are of different sizes.

Q4 ) 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

1 centimeter = 10 millimeter
1 metre = 100 centimeter
1 kilometer = 1000 meter

Q5 ) 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
=( 1.65 × 100 )cm
=165 cm
= ( 165× 10 )mm
= 1650 mm

Q6 ) 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 :

? 1000 m = 1km

? 1 m = 11000 km

? 3250 m = 1×32501000 km = 3.25 km

Q7 ) 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
= One end - other end
= 33.1 cm – 3.0 cm
= 30.1 cm.

Q8 ) 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 having circular motion.

Differences: - Bicycle have rectilinear motion but ceiling fan have not rectilinear motion.

Q9 ) 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 :

A measuring tape is not made of an elastic material like rubber because elastic tap will not give right measurement because elasticity is increased or decreased the size of tape which will not be give properly reading of measurements.

Q10 ) Give two examples of periodic motion.



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


Answer :

Periodic motion;If the same motion occurs again and again, it is said to be repetitive motion. Repetitive motion that repeats itself at regular intervals of time is called periodic motion.
Therefore Pendulum , sea-saw and motion of earth are the periodic motion.



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