Welcome to BodhiClasses, your reliable companion for concept-driven and curriculum-aligned Science education. In this guide, we provide well-structured extra questions and answers from NCERT Class 6 Science Chapter 5 – Measurement and Motion. These additional practice questions are designed to sharpen your understanding of physical quantities, standard units, types of motion, and practical measurement techniques.
Whether you’re preparing for your school exams, Olympiads, or simply revising concepts, this resource is perfect for mastering the chapter with clarity.
Section A: Measurement: Multiple Choice Questions (MCQs)
Choose the correct option:
- The SI unit of length is:
(a) centimetre
(b) metre
(c) millimetre
(d) kilometre
Answer: (b) metre - Which tool would you use to measure the length of a classroom blackboard?
(a) Measuring tape
(b) Ruler
(c) Vernier caliper
(d) Compass
Answer: (a) Measuring tape - 1 kilometre is equal to:
(a) 100 metres
(b) 1000 centimetres
(c) 1000 metres
(d) 10,000 millimetres
Answer: (c) 1000 metres - The correct match for a measurement of “thickness of a coin” is:
(a) centimetre
(b) metre
(c) kilometre
(d) millimetre
Answer: (d) millimetre - Which of the following is a non-standard unit?
(a) Handspan
(b) Centimetre
(c) Millimetre
(d) Metre
Answer: (a) Handspan - Which object is best measured in metres?
(a) Length of a pen
(b) Height of a door
(c) Width of a coin
(d) Thickness of a book
Answer: (b) Height of a door - Which one of these shows oscillatory motion?
(a) Bicycle wheel
(b) Swing
(c) Car on road
(d) Fan blades
Answer: (b) Swing - Circular motion is observed in:
(a) Earth revolving around the Sun
(b) Pendulum
(c) Car in a straight line
(d) Lift moving up
Answer: (a) Earth revolving around the Sun - Linear motion is also known as:
(a) Wavy motion
(b) Straight-line motion
(c) Curved motion
(d) Vibrating motion
Answer: (b) Straight-line motion - Which one is not a measuring device?
(a) Ruler
(b) Stopwatch
(c) Thermometer
(d) Measuring tape
Answer: (c) Thermometer - Which part of the ruler gives the smallest division?
(a) Centimetre
(b) Millimetre
(c) Inch
(d) Decimetre
Answer: (b) Millimetre - The most suitable tool to measure the length of a leaf is:
(a) Metre scale
(b) Thread
(c) 15 cm ruler
(d) Measuring tape
Answer: (c) 15 cm ruler - Which among the following is a periodic motion?
(a) Car moving on a road
(b) Rock falling from a hill
(c) Pendulum
(d) Dog walking
Answer: (c) Pendulum - A ball rolling down a slope shows:
(a) Circular motion
(b) Rectilinear motion
(c) Rotational motion
(d) Linear motion
Answer: (d) Linear motion - Which of these is used to measure large distances like city-to-city travel?
(a) Metre scale
(b) Thread
(c) Odometer
(d) Stopwatch
Answer: (c) Odometer - What kind of motion do fan blades have?
(a) Circular motion
(b) Oscillatory motion
(c) Rectilinear motion
(d) Random motion
Answer: (a) Circular motion - Which instrument would best measure the girth of a tree?
(a) Compass
(b) Cloth measuring tape
(c) Ruler
(d) Meter stick
Answer: (b) Cloth measuring tape - A thread can be useful to measure:
(a) Straight edge
(b) Curved surface
(c) Volume
(d) Time
Answer: (b) Curved surface - If you want to convert 2.5 m into cm, what is the answer?
(a) 250 cm
(b) 25 cm
(c) 2500 cm
(d) 2.5 cm
Answer: (a) 250 cm - What is motion?
(a) Change in volume
(b) Change in weight
(c) Change in position with time
(d) Change in colour
Answer: (c) Change in position with time
Section B: One Mark Questions
- What is the standard unit of length in the metric system?
Answer: Metre - Name one tool used to measure curved lengths.
Answer: Thread or string - How many centimetres are there in one metre?
Answer: 100 centimetres - What type of motion does the Earth show around the Sun?
Answer: Circular motion - What is the SI unit of distance?
Answer: Metre (m) - Define linear motion.
Answer: Motion along a straight line. - How is a ruler marked?
Answer: In centimetres and millimetres. - Give an example of a non-standard unit of measurement.
Answer: Handspan - What is oscillatory motion?
Answer: Repeated to-and-fro movement. - Name a common activity where cloth measuring tape is used.
Answer: Stitching or tailoring.
Section C: Measurement: Two Marks Questions with Answers
- What is the difference between standard and non-standard units of measurement?
Answer: Standard units are fixed and internationally accepted (like metre, kilogram), while non-standard units (like handspan, cubit) vary from person to person. - Define motion. Give one example.
Answer: Motion is the change in position of an object with respect to time. Example: A moving car. - How can you measure the curved edge of a glass?
Answer: Use a thread to trace the curve, then measure the thread length using a scale. - Write two examples each of circular and oscillatory motion.
Answer:
Circular – Earth’s orbit, ceiling fan
Oscillatory – Swing, pendulum - Convert 3.6 kilometres into metres.
Answer: 3.6 km = 3600 m - State two differences between oscillatory and linear motion.
Answer:
Oscillatory: Back and forth motion (e.g., swing)
Linear: Straight-line motion (e.g., train on track) - What is the importance of using standard units?
Answer: Standard units provide uniformity, accuracy, and consistency in measurement globally. - A book is 25 cm long. How many millimetres is that?
Answer: 25 cm = 250 mm - Why is a rubber band not suitable for measuring fixed lengths?
Answer: It stretches and gives inaccurate measurements. - What tool will you use to measure the height of a cupboard and why?
Answer: Measuring tape, because it can measure large lengths and curved surfaces easily.
Section D: Measurement: Applied Higher Order Thinking Questions (HOTS)
- You need to measure the thickness of one page of a book, but the page is too thin. What will you do?
Answer: Measure the thickness of 100 pages together and divide the total thickness by 100 to find the thickness of one page. - A boy claims a coin is 5 cm thick. Is this reasonable? How can you verify it?
Answer: It’s not reasonable—coins are usually 1–2 mm thick. Use a ruler to check the actual thickness. - How would you prove that motion is relative using a moving train?
Answer: A person inside the train appears stationary to another inside, but seems to be moving when observed from the platform. - If you could not find a measuring tape, how would you measure your height accurately at home?
Answer: Stand against a wall, mark the top of your head, and use a ruler or string to measure from floor to the mark. - Why is it important for scientists across the world to use standard units like metre and kilogram?
Answer: To ensure consistent, reliable, and reproducible measurements regardless of location or language.
