Simple Machines
This is used for lifting and lowering objects.
A pulley
This is used for transport.
A wheel
These are created when you put two or more simple machines together.
Complex machines
This invention created many new jobs in factories.
Steam engines
This transport helps us travel across oceans.
Aeroplane
This is used for joining two things together
A screw
A seesaw is an example of this.
A lever
This is what most complex machines use to function.
Electricity
This invention helps us get to other places very fast.
Modern trains
This technological revolution led to many new ways that we can talk to one another.
The communication revolution
This is used for moving objects up and down to different levels.
An inclined plane
A knife is an example of this.
A wedge
The pedals and handlebar on a bicycle are examples of these.
Levers
This invention led to the transport revolution.
Steam trains
This invention helped us communicate in morse code.
The telegraph
This is used for pushing objects up and down.
A lever
A slide is an example of this.
An inclined plane
The gears and chain on a bicycle are examples of this.
A pulley
This was the main way that we traveled before we had cars.
Horse and carriage
This helps us speak to people who are far away.
This is used for cutting and pushing things apart.
A wedge
This has wheels and axles AND a pulley!
A bicycle
Wheels and axles
This helps us travel all by ourselves.
Car
This invention is a phone AND a computer.
A smartphone