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Class 6 → Science → Chapter 5: Measurement of Length and Motion
I. Chapter Summary:
The chapter Measurement of Length and Motion introduces students to the importance of measurement in daily life and science. It explains different units of length, standard and non-standard measurements, and tools used for measuring length. Students also learn about motion, types of motion, and how objects move. This chapter builds basic understanding of measurement accuracy and the concept of motion in everyday situations.
II. Key Concepts Covered:
1. Measurement
The process of finding the size or length of an object.
2. Need for Measurement
Used for accuracy in daily activities like construction, tailoring, and science experiments.
3. Units of Length
- Standard Units: metre (m), centimetre (cm), kilometre (km)
- Non-standard Units: handspan, footstep
4. Measuring Tools
- Ruler
- Measuring tape
- Metre scale
5. Motion
Movement of an object from one place to another.
6. Types of Motion
- Rectilinear Motion: Straight-line motion
- Circular Motion: Movement in a circle
- Periodic Motion: Repeats after equal intervals
7. Distance and Direction
Understanding how far and in which direction an object moves.
III. Important Questions:
(A) MCQs (1 Mark):
- SI unit of length is:
(a) cm
(b) m ✅
(c) km
(d) mm - Which tool is used to measure length?
(a) Thermometer
(b) Ruler ✅
(c) Compass
(d) Clock - Movement in a straight line is called:
(a) Circular motion
(b) Rectilinear motion ✅
(c) Periodic motion
(d) Random motion - Motion that repeats is:
(a) Linear
(b) Circular
(c) Periodic ✅
(d) Static
IV. Short Answer Questions (2/3 Marks):
- What is measurement?
- Name standard units of length.
- Define motion with an example.
- What is rectilinear motion?
V. Long Answer Questions (5 Marks):
- Explain the need for measurement.
- Describe different types of motion.
- Explain tools used for measuring length.
- Discuss importance of standard units.
VI. HOTS Questions:
- Why are standard units important in science?
- Can an object have more than one type of motion? Explain.
VII. Key Formulas/Concepts:
Basic Measurement Concept
Length is measured in metres (m)text{Length is measured in metres (m)}Length is measured in metres (m)
Motion Concept
Motion = Change in position with timetext{Motion = Change in position with time}Motion = Change in position with time
VIII. Deleted Portions (CBSE 2025–2026):
No portions have been deleted from this chapter as per the rationalized NCERT textbooks.
IX. Chapter-Wise Marks Bifurcation (Estimated – CBSE 2025–2026):
| Unit/Chapter | Estimated Marks | Type of Questions Typically Asked |
|---|---|---|
| Measurement of Length and Motion | 5–7 Marks | MCQs, Short Answer, Concept-based |
Note: This is an estimate. Actual marks distribution may vary.
X. Previous Year Questions (PYQs):
1 Mark:
- What is the SI unit of length? (2019)
2/3 Marks:
- Define motion. (2020)
- Name types of motion. (2021)
5 Marks:
- Explain types of motion with examples. (2022)
XI. Real-World Application Examples:
- Measuring cloth or land
- Movement of vehicles
- Rotation of Earth
- Swinging of pendulum
XII. Student Tips & Strategies for Success:
Time Management:
- Revise concepts regularly.
Exam Preparation:
- Learn units and types of motion clearly.
- Practice examples.
Stress Management:
- Understand concepts step-by-step.
- Take breaks during study.
XIII. Career Guidance & Exploration:
- Science Stream: Physics, Engineering
- Commerce Stream: Construction business
- Arts Stream: Geography
Entrance Exams (Basic Awareness):
- JEE
- Polytechnic exams
XIV. Important Notes:
- Always use correct units.
- Practice measurement skills.
- Understand motion clearly.
- Refer to NCERT textbook.
- Revise regularly.