[NCERT Solutions] Class 6 Science Chapter 7 Motion and Measurement of Distances.
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# Class 6 Science Chapter 7 Explanation.
# Class 6 Science Chapter 7 Important Questions.
- NCERT Back Exercise Solutions -
NCERT solutions for class 6 science Chapter 7 Motion and Measurement of Distances.
NCERT Solutions for Class 6 Science Chapter 7 - Q1.
Q1. Give two examples each of modes of transport used on land, water and air.
Ans.
On Land : Car, Train
In Water : Boat, Ship
In Air : Airplane, Helicopter
NCERT Solutions for Class 6 Science Chapter 7 - Q2.
Q2. Fill in the blanks:
(a) One meter is 100 cm.
(b) Five kilometer is 5000 m.
(c) Motion of a child on a swing is Oscillatory .
(d) Motion of the needle of a swing machine is Periodic .
(e) Motion of a wheel of a bicycle is Circular .
NCERT Solutions for Class 6 Science Chapter 7 - Q3.
Q3. Why can a pace or footstep not 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 foot and the footstep will not be the same for every individual. Thus, the measurement will not be same for different people.
NCERT Solutions for Class 6 Science Chapter 7 - Q4.
Q4. Arrange the following lengths in their increasing magnitude.
(1metre, 1 centimeter, 1 kilometer, 1 millimeter)
Ans. 1 millimeter, 1 centimeter, 1 meter, 1 kilometer.
NCERT Solutions for Class 6 Science Chapter 7 - Q5.
Q5. The height of a person is 1.65 m. express it into cm and mm.
Ans.
1.65 m = 1.65 x 100 cm = 165 cm. (1 m = 100 cm)
1.65 m = 165 cm = 165 x 10 mm = 1650 mm (1cm = 10 mm)
NCERT Solutions for Class 6 Science Chapter 7 - Q6.
Q6. 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 m = 1/1000 km)
NCERT Solutions for Class 6 Science Chapter 7 - Q7.
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 33.1 cm. What is the length of the needle?
Ans. Length of needle =
= final reading - Initial reading
= 33.1 cm – 3.0 cm
= 30.1 cm.
NCERT Solutions for Class 6 Science Chapter 7 - Q8.
Q8. Write the similarities and differences between the motion of a bicycle and ceiling fan that has been switched on.
Ans.
Similarities : Wheel of a bicycle and ceiling fan both shows circular motion.
Differences : Cycle moves in rectilinear motion but ceiling fan does not move in rectilinear motion.
NCERT Solutions for Class 6 Science Chapter 7 - Q9.
Q9. 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. 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.
NCERT Solutions for Class 6 Science Chapter 7 - Q10.
Q10. Give two examples of periodic motion.
Ans. Example of periodic motion are :
(a) Pendulum.
(b) Child on the swing.
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