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WorksheetsPHYSICS - Physical Quantities & Units
Total questions: 20
Worksheet time: 40mins
A plumber needs to measure the internal diameter of a water tap as accurately as possible.
Which instrument should be used?
What is the length of the feather?
19 mm
29 mm
19 cm
29 cm
A student wishes to find the volume of a small, irregularly-shaped stone.
A ruler and a measuring cylinder containing some water are available. Which apparatus is needed?
neither the ruler nor the measuring cylinder
the measuring cylinder only
the ruler and the measuring cylinder
the ruler only
Which quantity is this instrument used to measure?
area
density
mass
volume
Which option contains only apparatus that could be used to determine the volume of a small block of unknown material?
measuring cylinder, metre rule
measuring cylinder, stopwatch
metre rule, balance
metre rule, stopwatch
The diameter of a copper wire is thought to be approximately 0.3mm. Which instrument should be used to obtain a more accurate measurement of the diameter of the wire?
Which measurement can be made using a micrometer screw gauge?
the air pressure of a tyre
the diameter of a wire
the turning effect of a spanner
the wavelength of microwaves
Which set of quantities are all vectors?
Vector: Has magnitude (value) and direction
acceleration, displacement, velocity
chemical energy, mass, power
extension, force, gravitational potential energy
weight, kinetic energy, work
Which quantity is a vector?
energy
force
speed
time
Newton’s third law involves two quantities which are equal in size and opposite in direction.
What is the unit for these two quantities?
This is Force (vector quantity)
J
m / s2
N
W
Which quantity is a scalar?
acceleration
force
temperature
velocity
During an experiment to find the density of a stone, the stone is lowered into a measuring cylinder partly filled with water.
Which statement is correct?
The difference between the readings gives the density of the stone.
The difference between the readings gives the volume of the stone.
The final reading gives the density of the stone.
The final reading gives the volume of the stone.
The diagram shows a stopwatch.
30.6s
33.0s
36.0s
36.6s
Which device can be used to measure the thickness of a single sheet of paper?
a metre rule
a micrometer
a plastic ruler
a measuring tape
Vernier calipers read to one tenth of a millimetre.
Which reading is given to this precision?
3.3cm
3.31cm
3.310cm
3.312cm
Velocity is given by the change in displacement divided by the change in time.
How many vector quantities appear in this statement?
0
1
2
3
The level of water in a measuring cylinder is 75 cm3 . A stone of volume 20 cm3 is lowered into the water.
What is the new reading of the water level?
20cm3
55cm3
75cm3
95cm3
A quantity is quoted as having a value of 6.2ms. In what units is it measured?
metres
metres per second
microseconds
milliseconds
Which instrument is most easily used to measure the internal diameter of a pipe?
manometer
measuring cylinder
micrometer
vernier calipers
Which statement about scalars and vectors is correct?
A scalar has direction but no size.
A scalar has size but no direction.
A vector has direction but no size.
A vector has size but no direction.
