Online Test — Measurement of Length and Motion
15 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 15
To measure a quantity means to compare it with a fixed:
Colour
Amount (unit)
Shape
Weight only
Explanation: Measuring compares a quantity with a fixed amount, the unit.
Question 2 of 15
Every measurement is written as a number together with a:
Unit
Picture
Name
Colour
Explanation: A measurement needs both a number and a unit.
Question 3 of 15
Body parts like the handspan are not used as standard units because they:
Are too long
Differ from person to person
Are too accurate
Cannot be seen
Explanation: Body-part lengths vary between people, so they are not reliable standards.
Question 4 of 15
The SI unit of length is the:
Kilogram
Second
Metre
Litre
Explanation: The metre is the SI unit of length.
Question 5 of 15
How many centimetres are there in 1 metre?
10
100
1000
12
Explanation: 1 metre = 100 centimetres.
Question 6 of 15
1 kilometre is equal to:
100 m
10 m
1000 m
500 m
Explanation: 1 kilometre = 1000 metres.
Question 7 of 15
The best unit to measure the thickness of a coin is the:
Kilometre
Metre
Millimetre
Litre
Explanation: A coin is very thin, so the millimetre is suitable.
Question 8 of 15
An object lies between the 4 cm and 10 cm marks of a ruler. Its length is:
10 cm
4 cm
6 cm
14 cm
Explanation: Length = 10 - 4 = 6 cm.
Question 9 of 15
While reading a scale, your eye should be:
At an angle
Straight above the mark
Very far away
Closed
Explanation: Looking straight above the mark avoids parallax error.
Question 10 of 15
A wrong reading caused by viewing the scale from an angle is called:
Parallax error
Motion
A standard unit
Reflection
Explanation: Viewing from an angle causes a parallax error.
Question 11 of 15
A curved line is best measured using a:
Thread and a ruler
Thermometer
Magnet
Balance
Explanation: Lay a thread along the curve, then straighten it against a ruler.
Question 12 of 15
An object is in motion when its ___ changes with time.
Colour
Position
Name
Mass
Explanation: Motion means a change of position with time.
Question 13 of 15
The motion of the hands of a clock is an example of:
Rectilinear motion
Circular motion
No motion
Straight-line motion
Explanation: Clock hands move along a circular path.
Question 14 of 15
Motion that repeats after equal intervals of time is called:
Rectilinear motion
Circular motion
Periodic motion
Random motion
Explanation: Periodic motion repeats at equal time intervals, like a pendulum.
Question 15 of 15
A car moving on a straight road shows ___ motion.
Circular
Rectilinear
Periodic
No
Explanation: Movement along a straight road is rectilinear motion.