Class 6 Science Chapter 5 MCQ Measurement of Length and Motion
MCQ on Measurement of Length and Motion Class 6
1. Choose the correct option in the following questions:
Question 1.
If you do not have a measuring scale what will you use to measure the length of the table?
(a) Ruler
(b) Measuring tape
(c) Handspan
(d) Yardstick
Answer:
(c) Handspan
Question 2.
Why did the measurements of the table differ among different people using their handspans to measure?
(a) They measure different tables.
(b) Their handspans are of different sizes.
(c) They use different units.
(d) The table length changes with every measurement.
Answer:
(b) Their handspans are of different sizes.
Question 3.
What is the SI unit of length?
(a) Foot
(b) Inch
(c) Metre
(d) Yard
Answer:
(c) Metre
Question 4.
How many centimetres are there in one metre?
(a) 10
(b) 100
(c) 1000
(d) 1
Answer:
(b) 100
Question 5.
Which of the following is NOT an SI unit of length?
(a) Kilometre
(b) Centimetre
(c) Inch
(d) Millimetre
Answer:
(c) Inch
Question 6.
Where should your eye be positioned when reading a measurement on a scale?
(a) To the left of the mark
(b) To the right of the mark
(c) Directly above the mark
(d) Below the mark
Answer:
(c) Directly above the mark
Question 7.
What should you do if the ends of your scale are broken?
(a) Use a different scale.
(b) Use any other full mark on the scale to start measuring.
(c) Estimate the length.
(d) Ignore the broken ends and measure as usual.
Answer:
(b) Use any other full mark on the scale to start measuring.
Question 8.
What tool can be used by visually challenged students to measure lengths?
(a) Normal 15 – cm scale
(b) Digital scale
(c) Raised markings scale
(d) Normal measuring tape
Answer:
(c) Raised markings scale
Question 9.
Which tool is best suited for measuring a curved line?
(a) Ruler
(b) Metal rod
(c) Thread
(d) Yardstick
Answer:
(c) Thread
Question 10.
After using a thread to measure a curved line, what should you do next?
(a) Measure the length of the thread against a straight scale.
(b) Cut the thread.
(c) Mark the thread with a pen.
(d) Wrap the thread around the object again.
Answer:
(a) Measure the length of the thread against a straight scale.
Question 11.
What type of measuring tape/ scale is ideal for measuring curved lines?
(a) Metal tape
(b) 15 cm scale
(c) Metre rod
(d) Flexible tape
Answer:
(d) Flexible tape
Question 12.
What is a reference point?
(a) A random point
(b) A fixed object or location
(c) The start of a measurement
(d) The end of a measurement
Answer:
(b) A fixed object or location
Question 13.
How will you and your friends decide to draw lines for a Kabaddi court?
(a) By estimating the distances
(b) By using a reference point
(c) By using their handspans
(d) By guessing
Answer:
(b) By using a reference point
Question 14.
How can you determine if an object is in motion?
(a) If it changes position with respect to a reference point over time.
(b) If it makes a sound.
(c) If it is heavy.
(d) If it is colourful.
Answer:
(a) If it changes position with respect to a reference point over time.
Question 15.
When we\are on a moving bus and look at the other passengers on the bus, what do we conclude about their motion?
(a) They are in motion.
(b) They are at rest.
(c) They are jumping.
(d) They are asleep.
Answer:
(b) They are at rest.
Question 16.
Why do we feel that all the passengers on a moving bus are ____________ in motion when we look outside?
(a) The bus is shaking.
(b) The position of the passengers changes with respect to outside objects.
(c) The passengers are moving inside the bus.
(d) The driver announces the motion.
Answer:
(b) The position of the passengers changes with respect to outside objects
Question 17.
What type of motion does a car moving on a straight road exhibit?
(a) Circular motion
(b) Linear motion
(c) Oscillatory motion
(d) Rotational motion
Answer:
(b) Linear motion
Question 18.
What type of motion does a swing exhibit?
(a) Linear motion
(b) Circular motion
(c) Oscillatory motion
(d) Random motion
Answer:
(c) Oscillatory motion
Question 19.
What type of motion does a merry- go-round exhibit?
(a) Linear motion
(b) Circular motion
(c) Oscillatory motion
(d) Irregular motion
Answer:
(b) Circular motion
Question 20.
The distance between Delhi and Mumbai is usually expressed in units of (NCERT Exemplar)
(a) decametre
(b) metre
(c) centimetre
(d) kilometre
Answer:
(d) kilometre
Question 21.
Fig. shows a measuring scale which is usually supplied with a geometry box.
Which of the following distance cannot be measured with this scale by using it only once? (NCERT Exemplar)
(a) 0.1 m
(b) 0.15 m
(c) 0.2 m
(d) 0.05 m
Answer:
(c) 0.2 m
Question 22.
A piece of ribbon folded five times is placed along a 30 cm long measuring scale as shown in Fig. (NCERT Exemplar)
The length of the ribbon is between
(a) 1.15 m – 1.25 m
(b) 1.25 m – 1.35 m
(c) 1.50 m – 1.60 m
(d) 1.60 m – 1.70 m
Answer:
(c) 1.50 m – 1.60 m
Question 23.
Bholu and Golu are playing in a ground. They start running from the same point A in the ground and reach point B at the same time by following the paths marked 1 and 2 respectively as shown in Fig. Which of the following is/are true for the given situation.
As compared to Golu, Bholu covers a
(a) longer distance but with a lower speed.
(b) longer distance with a higher speed.
(c) shorter distance with a lower speed.
(d) shorter distance with a higher speed.
Answer:
(b) longer distance with a higher speed.
Question 24.
Four pieces of wooden sticks A, B, C and D are placed along the length of 30 cm long scale as shown in Fig. Which one of them is 3.4 cm in length? (NCERT Exemplar)
(a) A
(b) B
(c) C
(d) D
Answer:
(c) C
Question 25.
You are provided three scales A, B and C as shown in Fig. to measure a length of 10 cm. (NCERT Exemplar)
For the correct measurement of the length you will use the scale
(a) A only
(b) B only
(c) C only
(d) Any of the three scales.
Answer:
(d) Any of the three scales.
2. Fill in the blanks with appropriate words:
1. The SI unit of length is the ____________.
Answer:
metre
2. One metre is equal to ____________ centimetres.
Answer:
100
3. One centimetre is equal to ____________ millimetres.
Answer:
10
4. A handspan is an example of ____________ a unit.
Answer:
traditional
5. A flexible measuring tape is ideal for measuring the ____________ of a tree.
Answer:
girth
6. The length of a curved line can be measured accurately using a ____________
Answer:
thread
7. The position of the eye should be directly ____________ the measurement mark to avoid parallax error.
Answer:
above
8. The zero mark on a scale must be ____________ to the object being measured.
Answer:
aligned
9. When using a scale with broken ends, you should start measuring from another ____________ mark.
Answer:
full
10. A ____________ is a fixed object or location used to describe the position of another object.
Answer:
reference point
11. An object is said to be in ____________ if its position changes with respect to a reference point over time.
Answer:
motion
12. The ____________ system of units was adopted to avoid confusion from different measurement systems used globally.
Answer:
International or SI
13. A ____________ marking on some scales represents units in inches, where 1 inch equals, 2.54 centimetres.
Answer:
secondary
3. State whether the statements given below are True or False:
(i) The SI unit of length is the metre.
Answer:
True
(ii) One metre is equal to 10 centimetres.
Answer:
False
(iii) A handspan is a standard unit of measurement.
Answer:
False
(iv) Flexible measuring tapes are ideal for measuring the girth of trees.
Answer:
True
(v) To measure a curved line, you can use a thread and then measure the thread against a straight scale.
Answer:
True
(vi) The correct position of the eye when measuring is directly above the measurement mark.
Answer:
True
(vii) If the zero mark on a scale is unclear, you cannot use the scale for measurement.
Answer:
False
(viii) A reference point is necessary to describe the position of an object accurately.
Answer:
True
(ix) An object at rest changes its position with respect to a reference point over time.
Answer:
False
(x) Circular motion refers to movement along a straight path.
Answer:
False
(xi) Linear motion can be observed in a car driving on a straight road.
Answer:
True
(xii) Oscillatory motion involves an object moving to and fro about a fixed position.
Answer:
True
(xiii) The length of a table measured in handspans will be the same for everyone.
Answer:
False
(xiv) Standard units of measurement are necessary for consistency and accuracy.
Answer:
True
(xv) Metres and inches are both units used in the International System of Units.
Answer:
False
4. Match the following items given in Column A with that in Column B:
Question 1.
| Column A | Column B |
| 1. SI unit of length | A. Handspan |
| 2. Measurement using body parts | B. Metre |
| 3. Circular motion | C. Merry-go-round |
| 4. Flexible measuring tool | D. Fixed object/location |
| 5. Reference point | E. Measuring tape |
Answer:
| Column A | Column B |
| 1. SI unit of length | B. Metre |
| 2. Measurement using body parts | A. Handspan |
| 3. Circular motion | C. Merry-go-round |
| 4. Flexible measuring tool | E. Measuring tape |
| 5. Reference point | D. Fixed object/location |
Question 2.
| Column A | Column B |
| 1. 100 centimetres | A. Thread |
| 2. Measuring curved lines | B. Avoids parallax error |
| 3. Oscillatory motion | C. Kilometre |
| 4. Unit for measuring long distances | D. Swing |
| 5. Positioning eye correctly | E. One metre |
Answer:
| Column A | Column B |
| 1. 100 centimetres | E. One metre |
| 2. Measuring curved lines | A. Thread |
| 3. Oscillatory motion | D. Swing |
| 4. Unit for measuring long distances | C. Kilometre |
| 5. Positioning eye correctly | B. Avoids parallax error |