December 9, 2020

How helicopters work?

The helicopter pilot starts the engine. Its big blades spin-slowly at first, then faster and faster. But the helicopter is still on the ground. The pilot […]
December 9, 2020

How aeroplanes work?

Aeroplanes are usually pushed through the air either by propellers or by jet engines. A propeller looks like two thin, pointed wings joined end to end. […]
December 9, 2020

How the angles blades help the turbine spin?

A turbine blade is similar to the blades on an electric fan. The angled blades draw air from behind and pull it forwards. This activity will […]
December 9, 2020

How do rocket engines work?

A jet fighter plane is very powerful, but it can’t fly into space. Why not? There is no oxygen in space to power the engine! All […]