Machines can move

Simple machines are:

• wedge

• pulley

• wheel and axle

• inclined plane

• lever and fulcrum

Complex machines are made up of two or more

A machine is a device that changes a ______ and makes work easier.

• force

• matter

• strong

• pulley

A wheelbarrow is a complex machine made up of ______ simple machines

The way objects move through the air is called:

• aerodynamics

• airdynamics

• aerodinamics

• airdinamics

The forces of flight:

• thrust

• lift

• weight

• drag

• friction

Lift is the _____ force that lets a plane move upwards.

Drag is a _____ force that slows the plane down.

Weight is the gravity force that pulls the plane _____ the centre of the Earth.

Thrust is a pull force that moves a plane _____.