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WorksheetsFORCE CLASS 8
Total questions: 17
Worksheet time: 9mins
The SI unit of force is (a)
The (a) force can be used to gather iron pins scattered on the floor.
Which one among the following is not a type of non-contact forces?
Muscular force
Magnetic force
Gravitational force
Electrostatic force
The pressure exerted by a liquid (a) with depth.
A drinking straw works on the existence of (a) pressure.
friction is a _________ force
Non contact
Contact
magnetic
electrostatic
Friction always
Helps in motion
Opposes motion
Both of these
None of these
Which of the following produces least friction?
Rolling Friction
Sliding Friction
Static Friction
Whenever the surfaces in contact tend to move with respect to each other , the force of friction comes into play
only if one of the two objects is liquid
only if the objects are solid
only if one of the two objects is gas
Irrespective of whether the objects are solid,liquid or gas.
The shape of an aeroplane is like a _______ to reduce the friction exerted by air.
Tortoise
Dog
Cat
Bird
Force of friction depends on
smoothness of surface
area of contact of 2 objects
inclination of surface
All of these
It is difficult to walk on an oily floor because
Force of friction is very less
Force of friction is very high
we don't like to walk on oily floor
None of these
What is Force
Pressure × Area
A Kick or a Punch
A push or a Pull
Both A and C
SI unit of Force is
Pascal
Newton
Kilogram
Magnitude
Effects of Force are _____
It may make an object move from rest.
It may change the speed of an objecti if it is moving.
It may change the direction of motion
of an object.
It may bring about a change in the
shape of an object.
It may cause some or all of these effects
The force exerted by a charged body
on another charged or uncharged body
is known as _____ force.
Electrostatic
Muscular
Magnetic
Gravitational
The envelop of air is known as the _____
Atmosphere
Atmospheric pressure
Atmospheric nitrogen
Stratosphere
