NCERT Class 6 Science Chapter 5: Measurement of Length and Motion Solutions By Physics Wallah

Measuring length accurately helps us compare objects, estimate distances, and describe the movement of things around us. From measuring the thickness of a page to the distance between two cities, different situations require different units of measurement. The chapter also introduces the idea of motion, where an object changes its position with respect to a reference point over time.

The NCERT  Class 6 Science Chapter 5 Solutions help you revise unit conversions, choose the correct measuring tools, understand different types of motion, and confidently solve activity-based questions from the textbook.

Class 6 Science Chapter 5 Solutions

Measurement of Length and Motion explains standard units of measurement, measuring instruments, reference points, and the different ways objects move. The following solutions cover most of the important textbook questions and activities.

1. Would it be convenient to use the unit metre to measure very large or very small lengths?

Answer: No. Different lengths require different units for convenience.

• Kilometre (km): Used for long distances, such as the distance between cities or railway stations.

• Metre (m): Used for measuring rooms, playgrounds, or furniture.

• Centimetre (cm): Used for objects like books, pencils, and bottles.

• Millimetre (mm): Used for very small lengths, such as the thickness of a page or a coin.

Using metres for very large distances or millimetres for long distances would make measurements inconvenient.

2. What do kilometre stones indicate? How did Padma know she was getting closer to Delhi?

Answer: Kilometre stones show the remaining distance to a particular place from the current location. Padma noticed that one stone showed 70 km to Delhi and the next showed 60 km. Since the distance was decreasing, she concluded that she was moving closer to Delhi.

3. When is an object said to be in motion?

Answer: An object is said to be in motion when its position changes with time relative to a reference point. Since Padma's position kept changing with respect to Delhi, she was in motion.

Class 6 Science Chapter 5: Match the Following

4. Match the lengths with the most suitable unit 

5. State whether the following statements are True or False.

 Note: 1 kilometre = 1000 metres, and 1 metre = 100 centimetres.

6. Which of the following is not a standard unit of length?

• Millimetre

• Centimetre

• Kilometre

• Handspan

Answer: Handspan is the correct answer because it is not a standard unit. Its length varies from person to person, whereas millimetre, centimetre, and kilometre are standard SI units.

7. Search for different scales or measuring tapes at home or school. Record the smallest value measured by each.

Answer:

8. Convert 1.5 km into metres.

Answer:

Since 1 km = 1000 m,

1.5×1000=1500 m1.5 \times 1000 = 1500\text{ m}1.5×1000=1500 m

Final Answer: 1500 m

9. How can you measure the curved base of a tumbler or bottle?

Answer: Wrap a piece of string or a flexible measuring tape around the curved base. Mark the point where the string completes one round, straighten it, and measure its length using a ruler. This gives the length of the curved part.

10. Measure your friend's height and express it in metres, centimetres, and millimetres.

Answer: Suppose your friend's height is 1.4 metres.

11. Estimate how many coins are needed to cover the length of a notebook.

Answer: Measure the diameter of the coin and the length of the notebook.

Example:

• Notebook length = 18 cm

• Coin diameter = 2 cm

182=9\frac{18}{2}=9218=9

Answer: Approximately 9 coins will cover the notebook length. You can verify the estimate by placing the coins without gaps.

12. Give two examples each of linear, circular, and oscillatory motion.

Answer:

13. List three objects best measured in mm, cm, and m.

Answer:

14. Identify the type of motion of a ball on a rollercoaster.

Answer:

The ball changes its type of motion depending on the shape of the track.

Class 6 Science Chapter 5 Solutions PDF

Class 6 Science Chapter 5 Solutions PDF brings together all the important NCERT questions, unit conversions, measurement activities, and motion-based exercises in one place, making revision and practice easier before your exams.

Why Choose NCERT  Class 6 Science Chapter 5 Solutions

The NCERT  Class 6 Science Chapter 5 Solutions are designed to help you understand the NCERT chapter through accurate, easy-to-follow explanations. Whether you are revising unit conversions, learning about reference points, or solving activity-based questions, these solutions help you build a stronger understanding of measurement and motion.

• Complete NCERT Coverage: Find answers to all textbook questions and activities in one place.

• Simple Step-by-Step Explanations: Understand concepts with clear and student-friendly solutions.

• Better Concept Clarity: Revise units of length, measuring tools, and different types of motion with ease.

• Practical Learning: Learn through real-life examples and observation-based activities from the chapter.

• Effective Revision Resource: Quickly review important topics before homework, class tests, and exams.

How does Physics Wallah Help You Prepare for Class 6 Science?

You can use NCERT  learning resources throughout your preparation to understand concepts, revise important topics, and practise textbook questions effectively.

• Study the Complete Syllabus: Learn every chapter with the Class 6 Science Syllabus.

• Revise Important Concepts: Use Class 6 Science Notes for quick concept revision and definitions.

• Practise More Questions: Solve Class 6 Science Important Questions to improve your problem-solving skills.

• Prepare for Exams: Attempt Class 6 Science Sample Papers to practise different question types and assess your understanding.

• Check Your Answers: Use Class 6 Solutions to verify your NCERT answers and understand the correct approach to each question.

Measurement of Length and Motion helps you develop essential scientific skills used in everyday life, from measuring objects accurately to understanding how motion is described using reference points. Solve the questions on your own first, then use the NCERT  Solutions to verify your answers and strengthen your concepts.

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