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WorksheetsCHAPTER 8 FORCE AND MOTION
Total questions: 25
Worksheet time: 6hrs 15mins
A _____________ is a push or pull.
power
energy
force
work
____________ is a force that resist movement between two surfaces which are in contact with each other.
Gravitational force
Frictional force
Normal force
Elastic force
An object can float on the surface of water because of the ____________ acting on the object.
Gravitational force
Frictional force
Buoyant force
Elastic force
Elastic force exists when a material is stretched or compressed such as rubber band and _______________.
chair
spring
pencil
table
Force has __________ and __________.
power
magnitude
energy
direction
What is the device to measure force?
Thermometer
Spring balance
Ammeter
Galvanometer
The S.I. unit for force is
watt (W).
Newton (N).
ampere (A).
kilogram (kg).
Abu's body mass is 75 kg. What is Abu's weight?
7.5 N
75 N
750 N
7500 N
According to Newton's Third Law, in every action force, there is a reaction force of the _______ magnitude but in the ________ direction.
same, same
different, different
different, same
same, different
A wooden block floats on water because the magnitude of the weight is the _____ as the buoyant force which exists in ______ direction.
same, same
different, different
same, different
different, same
Force can change ______________ of an object. Choose 3 answers.
size
shape
motion
mass
An object will sink if buoyant force is ______ than weight.
more
less
An object has a density of 2.4 g/cm3. Will the object float or sink in water?
Float
Sink
An object has a density of 0.3 g/cm3. Will the object float or sink in water?
Float
Sink
First class lever has ___________ in between effort and __________.
load, fulcrum
fulcrum, load
Tick 2 correct examples of first class lever.
Nutcracker
Scissors
Pliers
Fishing rod
What class of lever is shown in the diagram?
First class
Second class
Third class
A force of 50 N is used on a spanner to turn a nut. What is the moment of the force if the spanner is 30 cm long?
1.5 N
15 N
150 N
1500 N
Suggest one way to increase the moment of force.
Reduce the applied force.
Increase the distance between the pivot and effort.
Ali and Abu are sitting on a see-saw. Ali who is 20 kg is sitting 3 m from the fulcrum. Predict Abu's weight if he sits 2 m away from the fulcrum.
200 N
250 N
300 N
350 N
Which of the following exerts a higher pressure?
Flat shoes
High-heeled shoes
Which of the following is correct about air pressure?
The higher the volume the higher the pressure.
The higher the temperature the higher the pressure.
The lower the volume the lower the pressure.
The lower the temperature the higher the pressure.
What is exerted by the atmosphere on the surface of the Earth and all objects on the Earth?
Gravity
Atmospheric pressure
Alice finds difficult to suck the water using torn straw. This is because
the atmospheric pressure is higher than the pressure inside the straw.
the atmospheric pressure is lower than the pressure inside the straw.
the atmospheric pressure is equal to the pressure inside the straw.
The base of the dam is broader to withstand ____ pressure of water.
lower
greater
