Class 6 Science Chapter 10 Motion and Measurement of Distances answer to each chapter is provided in the list so that you can easily browse throughout different chapter Assam Board As Per New Syllabus Class 6 Science Chapter 10 Motion and Measurement of Distances and select needs one.
SEBA Class 6 Science Chapter 10 Motion and Measurement of Distances
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Motion and Measurement of Distances
Chapter: 10
| Exercise |
1. Give two examples each, of modes of transport used on land, water and air.
Ans: Two examples each, of modes of transport used on land, water and air are:
Land – Bus, train,
Water– boat, ship
Air – airplane, helicopter
2. Fill in the Blanks:
(i) One meter is …………..cm.
Ans: 100
(ii) Five kilometer is ……………m.
Ans: 5000
(iii) Motion of a child on a swing is ………
Ans: Periodic motion
(iv) Motion of the needle of a sewing machine is …………….
Ans: Periodic oscillatory circular
(v) Motion of the wheel of a bicycle is ………….
Ans: circular.
3. Why can a pace or footstep not be used as a standard unit of length?
Ans: Pace or footstep not be used as a standard unit of length because it varies from person to person.
4. Arrange the following lengths in their increasing magnitude:
1 matre, 1 centimeter, 1 kilometer, 1 millimeters
Ans: 1 millimeter, 1 centimeter, 1 mitre, 1 kilometer.
5. The height of a person is 1.65m. Express it into cm and mm.
Ans: 1.65m = 165 cm = 1650 mm.
6. The distance between Radha’s home and her school is 3250m. Express this distance into km.
Ans: 1km = 1000m
3250m = 3.25kms
7. While measuring the length of knitting needles, 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: Length of needle is
33.1cm – 3.0 cm
= 30.1cm.
8. Write the similarities and differences between the motion of a bicycle and a ceiling fan that has been switched on.
Ans: Similarity: The blades of a fan and the wheels of a bicycle show circular motion.
Dissimilarity: Bicycle moves forward this executes rectilinear motion but fan does not show such motion.
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: An elastic measuring tape will not give accurate measurements.
Reasons:
(i) The main property of an elastic material is its elasticity, where it can stretch when pulled and deform based on the force used during the pull and contraction.
(ii) The length of the elastic tape varies and depends upon the force by which it is stretched.
(iii) Measurement would vary between 2 or 3 readings even when measured by the same person and by the same elastic tape.
10. Give two examples of periodic motion.
Ans: Two examples of periodic motion are:
(i) Oscillations of a pendulum.
(ii) motion of earth around the sun.
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