MCQs-Measurement of Length and Motion-Class 6-Science

Multiple Choice Questions-Chapter 5 (Measurement of Length

and Motion)-Class 6-Subject Science

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Multiple Choice Questions (MCQs)

Which of the following is a standard unit of length?
a) Handspan
b) Metre
c) Footstep
d) Cubit
Answer: b) Metre
The SI unit of length is:
a) Kilogram
b) Centimetre
c) Metre
d) Millimetre
Answer: c) Metre
The length of a pencil is best measured in:
a) Kilometres
b) Metres
c) Centimetres
d) Millimetres
Answer: c) Centimetres
1 kilometre is equal to:
a) 100 metres
b) 10,000 metres
c) 1000 metres
d) 10 metres
Answer: c) 1000 metres
Which measuring instrument is used to measure the girth of a tree?
a) Metre scale
b) Measuring tape
c) Ruler
d) Compass
Answer: b) Measuring tape
What is the reason behind the need for standard units of measurement?
a) To make measurements easier
b) To avoid confusion in measurements
c) To allow different units for different people
d) To make measurements longer
Answer: b) To avoid confusion in measurements
Which among the following is the smallest unit of length?
a) Kilometre
b) Centimetre
c) Metre
d) Millimetre
Answer: d) Millimetre
The correct way to measure length using a scale is:
a) Holding it at an angle
b) Keeping it flat and viewing from directly above
c) Placing it on the object without contact
d) Using only one end of the scale
Answer: b) Keeping it flat and viewing from directly above
If the zero mark on a scale is broken, we should:
a) Throw the scale away
b) Use another starting point and subtract its reading
c) Start measuring from the broken end
d) Guess the measurement
Answer: b) Use another starting point and subtract its reading
A kilometre stone on the road tells:
a) The width of the road
b) The distance to a particular place
c) The height of the road
d) The depth of the road
Answer: b) The distance to a particular place
The motion of a pendulum is an example of:
a) Circular motion
b) Linear motion
c) Oscillatory motion
d) Rotational motion
Answer: c) Oscillatory motion
The movement of a bicycle wheel while moving is an example of:
a) Linear motion
b) Circular motion
c) Oscillatory motion
d) Periodic motion
Answer: b) Circular motion
The movement of the Earth around the Sun is an example of:
a) Linear motion
b) Circular motion
c) Oscillatory motion
d) Rotational motion
Answer: b) Circular motion
The motion of a train on a straight track is:
a) Linear motion
b) Circular motion
c) Oscillatory motion
d) Rotational motion
Answer: a) Linear motion
The motion of a child on a swing is:
a) Circular motion
b) Linear motion
c) Oscillatory motion
d) None of the above
Answer: c) Oscillatory motion
A spinning top exhibits:
a) Linear motion
b) Rotational motion
c) Oscillatory motion
d) None of the above
Answer: b) Rotational motion
If a car travels 10 km in 15 minutes, how far will it travel in 1 hour at the same speed?
a) 30 km
b) 40 km
c) 20 km
d) 50 km
Answer: b) 40 km
The speed of an object is measured in:
a) Kilometres per hour
b) Metres per second
c) Both a and b
d) None of the above
Answer: c) Both a and b
An object is in motion if it:
a) Stays in one place
b) Changes its position over time
c) Stops moving
d) Becomes invisible
Answer: b) Changes its position over time
Which of the following objects exhibits both rotational and linear motion?
a) A rolling ball
b) A swinging pendulum
c) A bird flying
d) A fan blade
Answer: a) A rolling ball

Additional MCQs:

The most suitable device to measure the thickness of a coin is:
a) Metre scale
b) Measuring tape
c) Vernier calipers
d) Ruler
Answer: c) Vernier calipers
The length of a cricket pitch is best measured in:
a) Millimetres
b) Centimetres
c) Metres
d) Kilometres
Answer: c) Metres
Which of the following motions is periodic in nature?
a) The movement of a car on a road
b) The swinging of a pendulum
c) The rolling of a ball
d) The flight of a bird
Answer: b) The swinging of a pendulum
Which of the following is NOT a type of motion?
a) Linear motion
b) Circular motion
c) Static motion
d) Oscillatory motion
Answer: c) Static motion
What is the correct method to measure a curved line using a scale?
a) Place the scale on the curved line
b) Use a thread, then measure the thread with a scale
c) Fold the paper along the curve and measure
d) Use two rulers at different angles
Answer: b) Use a thread, then measure the thread with a scale
The movement of a satellite around Earth is an example of:
a) Linear motion
b) Circular motion
c) Oscillatory motion
d) Random motion
Answer: b) Circular motion
The motion of an electric fan's blades is an example of:
a) Rotational motion
b) Oscillatory motion
c) Linear motion
d) Vibrational motion
Answer: a) Rotational motion
What is the primary reason for using a flexible measuring tape?
a) It is cheaper than a ruler
b) It can measure curved surfaces easily
c) It is made of plastic
d) It can be used to measure liquids
Answer: b) It can measure curved surfaces easily
A person standing in a moving train appears to be at rest when observed from inside the train because:
a) The person is not moving at all
b) The train and the person are moving together
c) The train is stationary
d) The person is moving faster than the train
Answer: b) The train and the person are moving together
A grandfather clock has a pendulum that swings back and forth. This is an example of:
a) Circular motion
b) Oscillatory motion
c) Random motion
d) Translational motion
Answer: b) Oscillatory motion

True or False:

The SI unit of length is the kilometre. (False)
A broken scale can still be used for measurement. (True)
Circular motion is a type of linear motion. (False)
Oscillatory motion always happens in a circular path. (False)
A metre scale is used to measure small lengths like a book. (True)
1 kilometre is equal to 1000 metres. (True)
Linear motion always follows a straight path. (True)
A pendulum’s movement is an example of circular motion. (False)
Speed is the measure of how fast an object moves. (True)
A measuring tape is best suited for measuring curved surfaces. (True)

Match the Following:

Column A	Column B
1). SI Unit of Length	a) Spinning Top
2). 1 km	b) Kilometre Stones
3). Circular Motion	c) Fixed Object
4). Linear Motion	d) Flexible Lengths
5). Oscillatory Motion	e) 10 mm
6). Rotational Motion	f)Metre (m)
7). Distance Measurement	g)1000 m
8). Reference Point	h) Moving Fan Blades
9). Measuring Tape	i) Car on a Straight Road
10). 1 cm	j) Swing

Answer:

Column A	Column B
1). SI Unit of Length	f) Metre (m)
2). 1 km	g) 1000 m
3). Circular Motion	h) Moving Fan Blades
4). Linear Motion	i) Car on a Straight Road
5). Oscillatory Motion	j) Swing
6). Rotational Motion	a) Spinning Top
7). Distance Measurement	b) Kilometre Stones
8). Reference Point	c) Fixed Object
9). Measuring Tape	d) Flexible Lengths
10). 1 cm	e) 10 mm

Assertion and Reasoning Questions:

Assertion (A): The metre is used as a standard unit of length.
Reason (R): The metre is the most convenient unit for all types of measurements.
Answer: (A is true, but R is false.)
Assertion (A): A rolling ball exhibits both linear and rotational motion.
Reason (R): A rolling ball moves forward while spinning at the same time.
Answer: (Both A and R are true, and R is the correct explanation of A.)
Assertion (A): Speed is measured in kilometres per hour.
Reason (R): Speed is the total distance covered divided by the time taken.
Answer: (Both A and R are true, and R is the correct explanation of A.)
Assertion (A): A fan moving in a circular motion is an example of oscillatory motion.
Reason (R): Oscillatory motion involves movement back and forth in a fixed path.
Answer: (A is false, but R is true.)
Assertion (A): A pendulum exhibits oscillatory motion.
Reason (R): It moves back and forth from a fixed point.
Answer: (Both A and R are true, and R is the correct explanation of A.)

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