Why was the number of handspans different for Deepa and her friends?

They did not know how to measure.

Their handspans were inaccurate.

Their handspans were different sizes.

Why is there a need for standard units of measurement?

Because people started travelling.

Because people preferred different units.

Because people wanted fun ways to measure.

Because people found them confusing.

What is the correct way to place the scale when measuring length?

Place it in contact with the object.

What example is given to demonstrate how to measure with a broken scale?

Measuring the length of a stick

Why might the lengths measured by different students not be the same?

Because they used different objects

Because their measurement units were different

Because they measured at different times

What is a flexible measuring tape commonly used for?

For measuring the girth of a tree

What must be done if you use a scale with a broken end to measure length?

Measure from the closest clear mark

Subtract the length of the broken part

Measure from the 1 cm mark and subtract

How did Anish and his parents measure the required length of string lights for the verandah?

Using a string and measuring tape

Why were their observations about the distance to the garden different?

They used different reference points.

What is a reference point?

A fixed point used to determine position

Why would all of Deepa’s friends have the same observation if they thought of distances from the bus stand?

Because they had different distances.

Because they would have a common reference point.

Because they measured from different places.

Because they shared the same school.

What does the kilometre stone reading 'Delhi 70 km' signify?

The distance to the next village

How do you decide if an object is in motion?

If it remains in the same place

If it changes position relative to a reference point

If it is the same color as the reference point

What is required to determine if an object is at rest?

If it stays near a reference point

If it does not change its position relative to a reference point

How is motion categorized in a children’s park?

By the distance from the entrance

NCERT Solutions Class 6 Science Chapter 5 – Measurement of Length and Motion

Name: Measurement of Length and Motion – Class 6 Science
Uploaded: 2026-05-31
Description: This chapter explores how we measure length and identify motion using standard units, reference points, and various types of movement. It explains the need for accurate measurement tools and how to recognize motion in everyday life.

Class 6 Science

Last Updated: 31 May 2026

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Chapter Introduction

This chapter explores how we measure length and identify motion using standard units, reference points, and various types of movement. It explains the need for accurate measurement tools and how to recognize motion in everyday life.

हिंदी में (Hindi)

यह अध्याय यह समझाता है कि हम लंबाई को कैसे मापते हैं और गति की पहचान कैसे करते हैं, इसके लिए मानक इकाइयों, संदर्भ बिंदुओं और विभिन्न प्रकार की गतियों का उपयोग किया जाता है। यह सटीक माप उपकरणों की आवश्यकता और दैनिक जीवन में गति को पहचानने के तरीकों को स्पष्ट करता है।

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Important Points

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Practice MCQ Questions (61 questions)

Q1. Why did Deepa need a new uniform?

Q2. How did the shopkeeper measure the cloth for Deepa's uniform?

Q3. What did Deepa's mother ask the tailor to increase the length of the uniform by?

Q4. Which body part did Padma mention farmers use to measure length?

Q5. What body part did Deepa and her friends use to measure the table in their classroom?

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Tough Words (Glossary)

Curious

Meaning: Eager to know or learn something

अर्थ: जिज्ञासु

"Deepa is a curious girl."

Uniform

Meaning: A particular set of clothes

अर्थ: वर्दी

"She bought a new school uniform."

Rod

Meaning: A straight stick-like piece of metal or wood

अर्थ: डंडा / छड़

"The shopkeeper used a metal rod."

Flexible

Meaning: Easily bent without breaking

अर्थ: लचीला

"He used a flexible measuring tape."

Angula

Meaning: Ancient unit of measurement (finger width)

अर्थ: अंगुल (प्राचीन माप की इकाई)

"The tailor added four angulas."

Stride

Meaning: A long step

अर्थ: लंबा कदम

"He measured the field by his strides."

Handspan

Meaning: The distance between the tips of the thumb and little finger of an outstretched hand

अर्थ: बल्लिष्ठ (हथेली का फैलाव)

"The table was measured in handspans."

Fist

Meaning: A hand closed tightly

अर्थ: मुट्ठी

"He knocked on the door with his fist."

Artefact

Meaning: An object made by humans, usually historical

अर्थ: कलाकृति / प्राचीन वस्तु

"Artefacts were found in Harappan sites."

Excavated

Meaning: Dug out from the ground

अर्थ: खुदाई की गई

"Objects were excavated from the site."

Evolved

Meaning: Developed gradually

अर्थ: विकसित हुआ

"The system evolved over centuries."

Confusion

Meaning: Lack of clarity

अर्थ: भ्रम

"Different units created confusion."

Standard

Meaning: Accepted as normal or correct

अर्थ: मानक

"We use standard units of measurement."

Metre

Meaning: SI unit of length

अर्थ: मीटर

"The room is 4 metres long."

Centimetre

Meaning: One hundredth of a metre

अर्थ: सेंटीमीटर

"The pencil is 15 centimetres long."

Millimetre

Meaning: One tenth of a centimetre

अर्थ: मिलीमीटर

"The paper is 1 millimetre thick."

Kilometre

Meaning: 1000 metres

अर्थ: किलोमीटर

"Delhi is 200 kilometres away."

Inch

Meaning: A unit of length (2.54 cm)

अर्थ: इंच

"The photo frame is 8 inches long."

Foot

Meaning: A unit of length (12 inches)

अर्थ: फुट

"The table is 3 feet long."

Girth

Meaning: The distance around something

अर्थ: परिधि

"They measured the girth of the tree."

Align

Meaning: To place in a straight line

अर्थ: सीध में रखना

"Align the pencil with the scale."

Subtract

Meaning: To take away

अर्थ: घटाना

"Subtract 2 from 5 to get 3."

Visually challenged

Meaning: People with weak or no eyesight

अर्थ: दृष्टिबाधित

"Visually challenged students use special scales."

Reference point

Meaning: A fixed point for comparison

अर्थ: संदर्भ बिंदु

"The bus stand was taken as a reference point."

Powder

Meaning: Fine dry particles

अर्थ: पाउडर / चूर्ण

"They used limestone powder for marking."

Kilometre stone

Meaning: Stone indicating distance on road

अर्थ: मील का पत्थर

"The kilometre stone read Delhi 60 km."

Destination

Meaning: The place one is going to

अर्थ: गंतव्य

"Delhi was her final destination."

Constant

Meaning: Not changing

अर्थ: स्थिर / निरंतर

"The ship was moving at a constant speed."

Stationary

Meaning: Not moving

अर्थ: स्थिर

"The bus was stationary at the stop."

Linear motion

Meaning: Motion in a straight line

अर्थ: रेखीय गति

"The box moved in linear motion."

Circular motion

Meaning: Motion in a circle

अर्थ: वृत्तीय गति

"The merry-go-round shows circular motion."

Oscillatory motion

Meaning: To and fro repeated motion

अर्थ: दोलन गति

"The pendulum shows oscillatory motion."

Periodic

Meaning: Repeating at regular intervals

अर्थ: आवधिक

"The clock pendulum has periodic motion."

Parade

Meaning: A formal march

अर्थ: परेड

"Students marched in the parade."

March-past

Meaning: Marching in formation

अर्थ: मार्च-पास्ट

"They performed march-past on Republic Day."

Suitable

Meaning: Right for a purpose

अर्थ: उपयुक्त

"A measuring tape is suitable for chest size."

Division

Meaning: A part of something

अर्थ: भाग

"The scale has 100 divisions."

Marking

Meaning: A line or symbol for measurement

अर्थ: निशान

"The scale has clear markings."

Symbol

Meaning: A sign or mark

अर्थ: प्रतीक

"m is the symbol for metre."

Observation

Meaning: Careful watching

अर्थ: अवलोकन

"Their observations were different."

Measurement

Meaning: The size, length, or amount of something

अर्थ: मापन

"He took the measurement of the cloth."

Ancient

Meaning: Very old

अर्थ: प्राचीन

"Ancient systems used angula."

Civilisation

Meaning: A developed society

अर्थ: सभ्यता

"The Harappan Civilisation used measurements."

Eager

Meaning: Very interested or excited

अर्थ: उत्सुक

"She was eager to reach Delhi."

Appropriate

Meaning: Right or proper

अर्थ: उचित

"Choose an appropriate unit to measure."

Comparison

Meaning: Examining similarities or differences

अर्थ: तुलना

"They made a comparison of their results."

Discussion

Meaning: Talking about something

अर्थ: चर्चा

"They had a discussion about measurements."

Difference

Meaning: Not the same

अर्थ: अंतर

"There is a difference in their results."

Conclusion

Meaning: Final decision after thinking

अर्थ: निष्कर्ष

"They reached a conclusion after measuring."

← Previous

Ch 4: Exploring Magnets

Ch 6: Materials Around Us

NCERT Solutions Class 6 Science Chapter 5 – Measurement of Length and Motion

Chapter Introduction

Watch Video Lecture

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Important Points

Practice MCQ Questions (61 questions)

Q1. Why did Deepa need a new uniform?

Q2. How did the shopkeeper measure the cloth for Deepa's uniform?

Q3. What did Deepa's mother ask the tailor to increase the length of the uniform by?

Q4. Which body part did Padma mention farmers use to measure length?

Q5. What body part did Deepa and her friends use to measure the table in their classroom?

Q6. What did Deepa's mother call the use of handspan for measuring?

Q7. Why was the number of handspans different for Deepa and her friends?

Q8. What did Deepa and her friends conclude about using handspan as a unit of measurement?

Q9. What does the length of an object consist of?

Q10. Why is there a need for standard units of measurement?

Q11. What is the SI unit of length?

Q12. What is the smallest division marked on a 15-cm scale?

Q13. How many millimetres are in one centimetre?

Q14. What larger unit is used for measuring larger lengths?

Q15. Which unit would you use to measure the length of a pencil?

Q16. What is the correct way to place the scale when measuring length?

Q17. Where should your eye be positioned when reading a scale?

Q18. What should you do if the ends of the scale are broken?

Q19. What example is given to demonstrate how to measure with a broken scale?

Q20. What should be included when writing down a measurement result?

Q21. Why might the lengths measured by different students not be the same?

Q22. What does 1 mm equal in centimetres?

Q23. What is a flexible measuring tape commonly used for?

Q24. What is the purpose of a metre scale?

Q25. How many metres are there in one kilometre?

Q26. What did Deepa and her friends measure in their classroom?

Q27. What is an example of an appropriate scale for measuring the height of a room?

Q28. Why is a flexible tape more suitable for measuring the girth of a tree?

Q29. What must be done if you use a scale with a broken end to measure length?

Q30. How did Anish and his parents measure the required length of string lights for the verandah?

Q31. What is the method suggested for measuring the length of a curved line?

Q32. Why were their observations about the distance to the garden different?

Q33. What is a reference point?

Q34. Why would all of Deepa’s friends have the same observation if they thought of distances from the bus stand?

Q35. What is indicated by kilometre stones on a highway?

Q36. What does the kilometre stone reading 'Delhi 70 km' signify?

Q37. How do you decide if an object is in motion?

Q38. What is required to determine if an object is at rest?

Q39. What is linear motion?

Q40. What type of motion occurs when an object moves along a straight line?

Q41. What is an example of oscillatory motion?

Q42. What happens when an eraser is dropped from a certain height?

Q43. What type of motion occurs when an object moves along a circular path?

Q44. What type of motion occurs when an object moves to and fro about a fixed position?

Q45. What type of motion is seen when a metal strip is pressed and released?

Q46. What does the motion of an eraser tied to a thread and whirled around represent?

Q47. What do swings and the motion of a pendulum have in common?

Q48. What do you observe when you press and release the free end of a metal strip?

Q49. What is required for an object to have oscillatory motion?

Q50. How is motion categorized in a children’s park?

Q51. What type of motion do swings exhibit?

Q52. What type of motion does a merry-go-round exhibit?

Q53. What would be an example of linear motion in a children’s park?

Q54. What must be decided before drawing lines for a Kabaddi court?

Q55. What does the teacher ask the students to do regarding the garden visit?

Q56. What does the movement of a heavy box on the ground represent?

Q57. What does the motion of a march-past in a parade represent?

Q58. What is the reference point in Padma’s bus journey?

Q59. What type of motion is exhibited by a swing?

Q60. How can visually challenged students measure length?

Q61. What does a kilometre stone indicate?