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21 questions
A machine is any object that we use to perform a task...
... with less effort or more speed.
... with more speed.
... in a natural way.
... more effort.
For a machine to work, you need to use a force.
True
False
What is this?
Plug in
Unplug
What’s this?
Plug in
Unplug
What’s this?
Turn up
Turn down
What’s this?
Turn up
Turn down
What’s this?
Turn off
Turn on
What’s this?
Turn on
Turn off
Machines help us to____________ weights.
Lift.
Move.
Do domestic
Machines help us to move from one place to another, to do domestic tasks, to communicate, to play and...
.... to heat our houses.
... to walk.
... to wash our hands.
This machine needs...
Electricity
Fuel
Physical strength
This machine needs...
physical strength.
electricity.
Fuel.
This machine needs...
Fuel
Power of wind or water.
Physical strength.
This machine needs...
Power of wind.
Physical strength
Electricity.
SIMPLE MACHINES are made of ___________ pieces.
just one piece or very few pieces
many pieces
This simple machine is a ....
... inclined plane
... lever
... pulley
This simple machine is a ....
... inclined plane
... pulley
... lever.
This simple machine is a ....
... pulley
... inclined plane
... lever
This simple machine is a ...
... inclined plane
... pulley
... lever
The oldest machines were....
Simple
Complex
Balances and catapults are variations of the...
... ramp
... lever
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