Measurement of Length and Motion Class 6 MCQ Science Chapter 5

MCQ on Measurement of Length and Motion Class 6

Class 6 Science Chapter 5 MCQ Measurement of Length and Motion

Multiple Choice Questions :

Question 1.
Which of the following is not considered as an appropriate unit of measurement?
(a) kilometre
(b) cubit
(c) centimetre
(d) miles
Answer:
(b) cubit

Question 2.
A piece of ribbon folded five times is placed along a 30 cm long measuring scale as shown in figure.
Measurement of Length and Motion Class 6 MCQ Science Chapter 5 1
The length of the ribbon is between NCERT Exemplar
(a) 1.15 m-1.25 m
(b) 1.25 mm-1.35 m
(c) 1.50 m-1.60 m
(d) 1.60 m-1.70 m
Answer:
(b) 1.25 mm-1.35 m

Question 3.
Four pieces of wooden sticks A, B, C and D are placed along the length of 30 cm long scale as shown in figure. Which one of them is 3.4 cm in length?
Measurement of Length and Motion Class 6 MCQ Science Chapter 5 2
(a) A
(b) B
(c) C
(d) D
Answer:
(c) C

Question 4.
Figure 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?
Measurement of Length and Motion Class 6 MCQ Science Chapter 5 3
(a) 0.1 m
(b) 0.15 m
(c) 0.2 m
(d) 0.06 m
Answer:
(b) 0.15 m

Question 5.
Which of the following figure shows the correct placement of a block along a scale for measuring its length? NCERT Exemplar

Measurement of Length and Motion Class 6 MCQ Science Chapter 5 4
Answer:
Measurement of Length and Motion Class 6 MCQ Science Chapter 5 9

Question 6.
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 the figure. Which of the following is true for the given situation? NCERT Exemplar

Measurement of Length and Motion Class 6 MCQ Science Chapter 5 5

As compared to Golu, Bholu covers a
(a) longer distance 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 7.
Jenny wants to measure the height of her son. She asks her son to stand against a wall. Which picture shows the correct way of marking his height? Competency Based Que.

Measurement of Length and Motion Class 6 MCQ Science Chapter 5 6
Answer:
Measurement of Length and Motion Class 6 MCQ Science Chapter 5 10.

Question 8.
You are provided three scales A, B and C as shown in figure to measure a length of 10 cm.
Measurement of Length and Motion Class 6 MCQ Science Chapter 5 7
For the correct measurement of the length, you will use the scale NCERT Exemplar
(a) only A
(b) only B
(c) only C
(d) any of the three scales
Answer:
(d) any of the three scales

Question 9.
Each metre is divided in 100 equal divisions called CBSE Diksha
(a) centimetres
(b) millimetres
(c) kilometres
(d) None of these
Answer:
(a) centimetres

Question 10.
Which of the following statement(s) is/are correct?
(a) Revolution of the earth around the sun is an oscillatory motion.
(b) A freely falling stone possesses periodic motion.
(c) A simple pendulum possesses circular motion,
(d) Whirling a stone tied to a thread involves circular motion.
Answer:
(d) Whirling a stone tied to a thread involves circular motion.

Question 11.
The distance between Delhi and Mumbal is usually expressed in the unit of
(a) decametre
(b) metre
(a) centimetre
(d) kilometre
Answer:
(d) kilometre

Question 12.
A ball rolling on the ground represents
(a) rectilinear motion
(b) rotational motion
(c) Both (a) and (b)
(d) None of the above
Answer:
(c) Both (a) and (b)

Question 13.
Which of these is an example of periodic motion? Competency Based Que.
(a) The earth revolving around the sun.
(b) The movement of a flag due to wind.
(c) A bus moving forward on a curved road.
(d) A ball bouncing after being dropped on the floor.
Answer:
(a) The earth revolving around the sun.

Question 14.
Which of these conditions is necessary for rectilinear motion?
Competency Based Que.
(a) Moving on a curved line.
(b) Moving on a straight line.
(c) Moving with a uniform speed.
(d) Moving with a noy-uniform speed.
Answer:
(b) Moving on a straight line.

Question 15.
Priya moves on a straight road from point A to point C. She takes 20 minutes to cover a certain distance AB and 30 minutes to cover the rest of distance B C. She then turns back and takes 30 minutes to cover the distance CB and 20 minutes to cover the rest of the distance to her starting point. She makes 5 rounds on the road the same way. Priya concludes that her motion is
(a) only rectilinear motion
(b) only periodic motion
(c) rectilinear and periodic motion
(d) neither rectilinear nor periodic
Answer:
(c) rectilinear and periodic motion

Question 16.
What type of motion does a spinning top show? Competency Based Que.
Measurement of Length and Motion Class 6 MCQ Science Chapter 5 8
(a) Periodic
(b) Circular
(c) Rectilinear
(d) Rotational
Answer:
(d) Rotational

Question 17.
Which of the following have more than one type of motion?
(a) Motion of sewing machine
(b) A cycle moving on a straight road
(c) Motion of the moon around the earth
(d) All of the above
Answer:
(b) A cycle moving on a straight road

Question 18.
Hand-span cannot be considered as standard system of units because
(a) it varies from person to person
(b) people do not measure properly with it
(c) it is very old method of measurement
(d) its value is not definite
Answer:
(a) it varies from person to person

Question 19.
Which type(s) of motion is/are involved in a roller coaster ride?
(a) Rotational motion
(b) Rectilinear motion
(c) Curvilinear (circular) motion
(d) Both b and c
Answer:
(d) Both b and c

Question 20.
One metre has millimetres
(a) 100
(b) 10
(c) 1000
(d) 0.1
Answer:
(c) 1000

Assertion-Reason Questions :

1. The questions given below consist of an Assertion and a Reason. Based on that, choose the appropriate option.
(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.

1. Assertion (A) While travelling in a bus, co-passengers seem to be stationary.
Reason (R) The position of the co-passengers is not changing with respect to each other.
Answer:
(a) Co-passengers appear to be stationary because all are moving with same speed, so the position of co-passengers are not changing with respect to each other. Hence, (a) is the correct option.

2. Assertion (A) A rolling ball on the ground only possesses linear motion.
Reason (R) It is moving in a straight line path.
Answer:
(d) A rolling ball on the ground possesses linear as well as rotatory motion. Linear motion is when a body moves in a straight line path. Hence, (d) is the correct option.

3. Assertion (A) Cubit is the ancient unit of measuring length.
Reason (R) It can be considered as a standard unit.
Answer:
(c) Cubit is the ancient unit of measuring length but it cannot be considered as a standard unit due to the difference in size of body parts of different humans. Hence, (c) is correct.

4. Assertion (A) Periodic motion is when an object repeats its motion after regular intervals.
Reason (R) The motion of the carts of a Ferris wheel is circular.
Answer:
(b) Both Assertion and Reason are correct but not linked with each other. Hence, (b) is correct.

2. The questions given below consist of an Assertion and a Reason. Based on that, choose the appropriate option.

(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.
(c) Assertion is true but Reason is false.
(d) Assertion is false but Reason is true.

1. Assertion (A) The SI unit of length is metre.
Reason (R) Ancient methods of measurement vary from person to person.
Answer:
(b) Both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

2. Assertion (A) All periodic motions are oscillatory.
Reason (R) Oscillatory motion is when an object moves back and forth about its mean position.
Answer:
(d) Assertion is false but Reason is true.

Fill in the Blanks :

1. The S.I. units are also known as ________ system of units.
Answer:
Metric

2. Ancient units of measurement cannot be considered as standard units because they ________ from person to person.
Answer:
vary

3. S.I. unit of length is ________.
Answer:
metre

4. 2.15 m is equal to ________ cm.
Answer:
215

5. Motion is the change in ________ of an object with respect to the ________.
Answer:
position, reference point

6. Motion of an object or a part of it around a fixed point is known as ________ motion.
Answer:
rotational

7. A plucked string of a guitar executes ________ motion.
Answer:
oscillatory

8. Periodic motion is when the body ________ its motion after ________ intervals of time.
Answer:
repeats, regular

9. A bicycle going down a straight lane exhibits. ________ motion.
Answer:
linear

10. All oscillatory motions are ________.
Answer:
periodic

11. The length between the tip of the middle finger and the chin of an outstretched arm is called ________.
Answer:
Yard

12. A rocking chair exhibits ________ motion.
Answer:
oscillatory

13. The statndard unit of length in the International System of Units is ________ but for very small lengths, the unit commonly used is ________.
Answer:
metre, millimetres

True/False :

1. A standing tree is always considered to be at rest.
Answer:
False

2. Motion of wheel of a car exhibits linear as well as rotational motion.
Answer:
True

3. Metric system of units is considered as the S.I. system of units.
Answer:
True

4. 1m = 1000 cm
Answer:
False

5. We cannot use a broken scale to measure any length.
Answer:
False

6. Periodic motion is when the body moves to and fro about its mean position.
Answer:
False

7. Everything falling under the action of gravity exhibits linear motion.
Answer:
True

8. S.I. unit of distance is cm.
Answer:
False

9. Motion of the needle of a sewing machine is oscillatory.
Answer:
True

10. Clothe merchants use flexible measuring tape to measure the length of the clothe.
Answer:
False

11. Centimetre is a smaller unit than millimetre.
Answer:
False

12. Measuring tape is used to measure the girth of a tree.
Answer:
True

13. A spinning top shows circular motion.
Answer:
False

Match the Columns :

1. Match the Column I with Column II. NCERT Exemplar

Column I Column II
(a) A moving wheel of a sewing machine. (i) Circular motion
(b) Movement of tip of the minute hand of a clock in one hour. (ii) Rotational motion
(c) A moving swing. (iii) Periodic motion
(d) The moon revolving around the earth. (iv) Linear motion
(e) A falling mango. (v) Oscillatory motion

Answer:

Column I Column II
(a) A moving wheel of a sewing machine. (ii) Rotational motion
(b) Movement of tip of the minute hand of a clock in one hour. (i) Circular motion
(c) A moving swing. (v) Oscillatory motion
(d) The moon revolving around the earth. (iii) Periodic motion
(e) A falling mango. (iv) Linear motion

Case Based Questions :

1. Lavi is using a ruler to measure the length of her pencil and eraser. The pencil measures 14 cm and the eraser measures 4 cm. She then used the same scale to record her measurements in millimetres.

Question i.
What could be the length of pencil and eraser in millimetres respectively?
(a) 1.4 mm and 0.4 mm
(b) 140 mm and 400 mm
(c) 0.14 mm and 40 mm
(d) 140 mm and 40 mm
Answer:
(c) 0.14 mm and 40 mm

Question ii.
If Lavi has another pencil that is half of the first one in length, what is the length of the second pencil in metres?
(a) 0.075 m
(b) 0.14 m
(c) 0.75 m
(d) 7.5 m
Answer:
(b) 0.14 m

2. Judy is riding a merry-go-round when she noticed that the merry-go-round is rotating about a fixed central axis while she moves in a circular path.

Question i.
What type of motion is Judy experiencing on the merry-go-round?
(a) Rotational motion
(b) Linear motion
(c) Circular motion
(d) Oscillatory motion
Answer:
(d) Oscillatory motion

Question ii.
If Judy completes one full circle in every 15 seconds, what is the nature of her motion?
(a) Oscillatory motion
(b) Periodic motion
(c) Non-periodic motion
(d) Rotational motion
Answer:
(a) Oscillatory motion

Class 6 Science MCQ