NCERT Class 6 Science – Motion and Measurement of Distances Chapter 10 Question Answer for Preparation of Exams. Here we Provide Class 6 Vigyan Question Answer, Important Questions, for Various State Boards Students like CBSE, Haryana, uttar pradesh, mp and other state students.
Also Read : – Class 6 Science NCERT Solution
NCERT Class 6 Science Chapter 10 Motion and Measurement of Distances Question Answer ( अभ्यास के प्रश्न उत्तर ) Solution.
Motion and Measurement of Distances Class 6 Science Chapter 10 Question Answer
Textual Questions and Answer for Easy to Understand the Chapter of Science.
Q. 1. Give two examples each, of modes of transport used on land, water and air.
Ans. Modes of transport:-
1. On land are bus, car, train.
2. On water are ships and boats.
3. In air are aeroplanes and helicopters.
Q. 2. Fill in the blanks :
(a) One metre is ……. cm.
(b) Five kilometre is …….. m.
(c) Motion of a child on a swing is…… .
(d) Motion of a needle of a sewing machine is…….. .
(e) Motion of a wheel of a bicycle is …….. .
Ans. (a) 100 cm
(b) 5000 m
(c) periodic motion
(d) oscillatory motion
(e) circular motion.
Q. 3. Why cannot a pace or a footstep 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 the foot and the footstep is not same for every individual. Thus the measurement made from them will not be same
Q. 4. Arrange the following lengths in their increasing magnitude :
1 metre, 1 centimetre, 1 kilometre, 1 kilometre.
Ans. 1 millimetre < 1 centimetre < 1 metre < 1 kilometre.
Q. 5. The height of a person is 1.65 m. Express it into cm and mm.
Ans. 1.65 m = 165 cm
1.65 m = 1650 mm
[ 1m = 100 cm
1 m = 1000 mm)
Q. 6. The distance between Radha’s home and her school is 3250 m. Express this distance into km.
Ans. 3250 m =3250/1000 km
= 3.250 km
(1 km = 1000 m)
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 the needle is
= (33.1 – 3) cm
= 30.1 cm.
O. 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 same motion i.e. they have rotational motion. But wheel of cycle also performs translatory motion along the road.
Q. 9. Why could you not use an elastic measuring tape to measure distance ? What would be some of the problems you would meet in telling someone about a distance you measured with an elastic tape ?
Ans. We could not use an elastic measuring tape to measure distance because it has a property of elasticity and accurate measurements can never be taken. Different people will stretch it differently.
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.
(1) Swing (Jhoola).
(2) Branches of a tree.
(3) Needles (hands) of wrist watch.