NCERT Class 6 Science Chapter 5 Measurement of Length and Motion Solutions English Medium to each chapter is provided in the list so that you can easily browse through different chapters NCERT Class 6 Science Chapter 5 Measurement of Length and Motion Notes and select need one. NCERT Class 6 Science Chapter 5 Measurement of Length and Motion Question Answers Download PDF. NCERT Class 6 Solutions for Science English Medium.
NCERT Class 6 Science Chapter 5 Measurement of Length and Motion
Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. NCERT Class 6 Science Textual Solutions are part of All Subject Solutions. Here we have given NCERT Class 6 Science Chapter 5 Measurement of Length and Motion Notes English Medium. CBSE Class 6 Science in English Textbook Solutions for All Chapters, You can practice these here.
Measurement of Length and Motion
Chapter: 5
| Let us enhance our learning |
1. Some lengths are given in Column Ⅰ of Table 5.5. Some units are given in Column ⅠⅠ. Match the lengths with the units suitable for measuring those lengths.
| Column Ⅰ | Column ⅠⅠ |
| Distance between Delhi and Lucknow | centimetre |
| Thickness of a coin | kilometre |
| Length of an eraser | metre |
| Length of school ground | millimetre |
Ans:
| Column Ⅰ | Column ⅠⅠ |
| Distance between Delhi and Lucknow | kilometre |
| Thickness of a coin | millimetre |
| Length of an eraser | centimetre |
| Length of school ground | metre |
2. Read the following statements and mark True (T) or False (F) against each.
(i) The motion of a car moving on a straight road is an example of linear motion. [ ]
Ans: True.
(ii) Any object which is changing its position with respect to a reference point with time is said to be in motion. [ ]
Ans: True.
(iii) 1 km = 100 cm. [ ]
Ans: False.
3. Which of the following is not a standard unit of measuring length?
(i) Millimetre.
(ii) Centimetre.
(iii) Kilometre.
(iv) Handspan.
Ans: (iv) Handspan.
4. Search for the different scales or measuring tapes at your home and school. Find out the smallest value that can be measured using each of these scales. Record your observations in a tabular form.
Ans:
| Scale\measuring | Smaller value of measurement |
| (i) 15 cm scale | 1mm |
| (ii) Flexible tape | 1mm |
| (iii) long tape roll | 1cm |
| (iv) screw Gauge | 0.01mm |
| (v) metal measuring rod | 1mm |
5. Suppose the distance between your school and home is 1.5 km. Express it in metres.
Ans: The distance between school and home = 1.5 km.
= 1.5 × 1000 m
= 1500m.
6. Take a tumbler or a bottle. Measure the length of the curved part of the base of the glass or bottle and record it.
Ans: Measuring Curved Part of Tumbler/Bottle: Measure the length of the curved part of the base of the tumbler or bottle using a flexible measuring tape and record the value in centimetres or millimetres as per the tape.
7. Measure the height of your friend and express it in:
(i) metres.
(ii) centimetres. and
(iii) millimetres.
Ans: Height measurement of my friend:
(i) In meter 1.75m.
(ii) In centimeter 175cm.
(iii) In millimetres 1750mm.
8. You are given a coin. Estimate how many coins are required to be placed one after the other lengthwise, without leaving any gap between them, to cover the whole length of the chosen side of a notebook. Verify your estimate by measuring the same side of the notebook and the size of the coin using a 15-cm scale.
Ans: Hint: Measure the diameter of the coin and the length of the notebook. Divide the length of the notebook by the diameter of the coin to estimate the number of coins required. Say the diameter of the coin is 2 cm and the length of the notebook is 18 cm.
Then = 9 coins can be placed side to side along the length of the notebook.
9. Give two examples each for linear, circular and oscillatory motion.
Ans: Linear Motion – Car moving on a straight road, a person walking on a straight.
Circular Motion – The motion of a whirling stone tied of thread, A merry-go round.
Oscillatory motion – Pendulum of a clock, the motion of a wings.
10. Observe different objects around you. It is easier to express the lengths of some objects in mm, some in cm and some in m. Make a list of three objects in each category and enter them in Table 5.6.
Table 5.6: Sizes of objects around us
| Size | Objects |
| mm | |
| cm | |
| m |
Ans:
| Size | Objects |
| mm | Thickness of a coin, cardboard and diameter of a small screw. |
| cm | Length of a pencil width of a notebook height of a water bottle. |
| m | Height of a person, height of a door, length of a table. |
11. A rollercoaster track is made in the shape shown in Fig. 5.19. A ball starts from point A and escapes through point F. Identify the types of motion of the ball on the rollercoaster and corresponding portions of the track.
Ans: Position of a track and corresponding type of a motion:
A to B Linear motion.
B to C Curved motion.
C to D to E Circular motion.
E to F Linear motion.
12. Tasneem wants to make a metre scale by herself. She considers the following materials for it-plywood, paper, cloth, stretchable rubber and steel. Which of these should she not use and why?
Ans: Tasneem should not use stretchable rubber because it can change length when stretched, leading to inaccurate measurements. Plywood, cloth, paper, and steel are more suitable as they maintain consistent lengths.
13. Think, design and develop a card game on conversion of units of length to play with your friends.
Ans: Create cards with different lengths and corresponding units (mm, cm, m, km). Each card can have a length in one unit and players must match it to its equivalent in another unit. For example, a card with “100 cm” would match with “1 m”.
