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Propel a small boat with air pressure

Suitable For

Grade 5



Time Required

 <12 Hours



What’s it about?

You can have a lot of fun by making a ‘jet-propelled’ boat that is driven by the power of air under pressure. In this science experiment we will be making a ‘jet-propelled’ boat that is driven by a jet of steam, which you will be able to make in a boiler:

Topics covered

Pressure, Isaac Newton

What will I need?

  • NAIL

Procedure (Method)

Unfortunately, this section is only available in the e-book version of the project.

How does it work?

Unfortunately, this section is only available in the e-book version of the project.

This science experiment works according to the law of reaction. The force or ‘action’ of the steam going backwards, sets up an equal force or ‘reaction’ going forwards. As the water in the steel tube boiler starts to boil, the air pressure in the tube will start to increase (When a substance is heated it expands) and the steam will start to spurt out of the small hole in the tube. As the steam escapes backwards, your boat will shoot forwards and will carry on in this manner until the steam runs out or the flame is removed cooling down the gas in side the boiler.

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