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Worksheetssimple machine, force work and energy
Total questions: 107
Worksheet time: 3hrs 42mins
A push or pull that acts on an object is called
Work
Force
Energy
Momentum
When we throw a ball up, it falls down to the ground because of force of
Gravity
Friction
Magnetic
Electric
When we use force to move things, we do?
Work
Energy
A force that tries to stop a moving object is known as?
Gravitational force
Force of friction
Mechanical force
Electrical force
Ability to do work is known as?
Energy
Work
Force
Machine
Identify the simple machine
Wheel and axle
Lever
Pulley
Wedge
Identify whether work is done or not in the picture
Yes
No
A football is kicked by a boy. It rolls on the ground to some distance and stops. The force which stops the ball is _______.
muscular force
gravitational force
mechanical force
frictional force
Read the statements carefully and choose the correct option.
Statement A: We get energy from food we eat.
Statement B: We need energy to do work.
Statement A. is correct B is wrong
Statement B is correct A is wrong.
Both the statements are correct.
Both the statements are wrong.
A push or pull that acts on an object is called
Work
Force
Energy
Momentum
When we throw a ball up, it falls down to the ground because of force of
Gravity
Friction
Magnetic
Electric
Friction occurs when the object rubs against a
(a)
When we use force to move things, we do?
Work
Energy
Burning of fuels to produce energy causes pollution. Should we use them?
No
Yes
Can use
None 9f the above
We can calculate the work done by using the formula
Force × Energy
Force × Distance
Energy is the ability to do work.
True
False
What is the main source of our energy?
Planets
Comets
Moon
Sun
Electricity generated from water is called
(a)
Door knobs and screwdrivers are examples of which kind of simple machine?
Pulley
Lever
Wheel and axle
mass per unit of volume
density
volume
weight
mass
Amount of matter in an object is called its ______.
density
volume
weight
mass
Frank has a wooden box. It has a mass of 4kg, and a volume of 2l. What is its density?
8 kg/l
2 kg/l
1/2 kg/l
24 kg/l
If a body is immersed in water, it will weigh ______.
more than weight in air
less than weight in air
same as weight in air
may be more or less depending on impurities in water
According to Archimedes, loss in weight is equal to
weight of liquid
weight of the body
weight of the liquid displaced by the immersed part of the body
density of liquid
The weight of an object in water is called its ________.
Apparent volume
Apparent weight
Apparent loss
density
An object weighs 30 kg in air and 26 kg in water . What is the apparent loss in weight?
56 kg
780 kg
4 kg
8 kg
An object displaces 3 l of water and weighs 6kg in air .What is its apparent weight?
18 l
3 kg
3 l
18 kg
2 kg sugar and 2kg chips are kept in two containers.
Both will have the same volume .
Volume of sugar will be more.
Volume of chips will be more.
none
Two containers with same volume contain rice and cornflakes in them.Which one will weigh more?
Rice will weigh more
Cornflakes will weigh more
Both will weigh the same
Rice will weigh less
The density of an object is 2 kg/l.Will its float or sink in water?
It will sink.
It will float
