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Machines and inventions
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What is this? / Simple or complex machine?
A vacumnn cleaner / It is a complex machine
What is this? / Simple or complex machine?
A hammer / It is a simple machine
What is this? / Simple or complex machine?
A rake. It is a simple machine
What is this? / Simple or complex machine?
An iron. It is a complex machine
What is this? / Simple or complex machine?
A spanner. It is a simple machine
What is this? / Simple or complex machine?
A screwdriver . It is a simple machine
What is this? / Simple or complex machine?
A washing machine. It is a complex machine
What invention was invented by Samuel Morse?
The telegraph
What invention was invented by James Watt?
The steam engine
What invention started a revolution in communication ?
The telegraph
What invention was part of the Industrial Revolution?
the steam engine
What invention was used in factories, ships and trains?
the steam engine
True or false? All machines use energy.
True
True or false ? Activities carried out for machines are more difficult to be done
False
True or false ? Simple machines have one or two parts.
True
Which materials block the flow of electricity?
Insulator materials
Which materials flow the electricity through them?
Conductor materials
True or false ? Some machines use energy form the sun, wind and water
True
Conductor or insulator material ? Water
Conductor
Conductor or insulator material ? plastic
insulator
Conductor or insulator material ? Rubber
Insulator
True or false ? Machines need energy to work
True