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Launch your own vertical rocket with the power of air pressure

Suitable For

Grade 6



Time Required

 <12 Hours



What’s it about?

It takes a lot of energy for a rocket to break through the earth’s gravitational force and the atmosphere to outer space. In 1969, Neil Armstrong became the first human being to set foot on the moon by travelling with a space rocket to outer space! A rocket is a very powerful machine which obtains ‘thrust’ or ‘propulsion’ by ejecting a jet of fast moving fluid exhaust from its engine. In this science experiment we will explore how rockets are launched vertically and we will even mimic how hard it is to overcome the force of gravity by adding some weights to our rocket:

Topics covered

Rocket, Propulsion, Gravity, Isaac Newton

What will I need?


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 two of Newton’s Laws of motion. The first law states that for every action, there is an equal and opposite reaction. The force or ‘action’ of the compressed air going backwards, sets up an equal force or ‘reaction’ going forwards. It is this ‘reaction force’ that causes the balloon to move upwards along the string. According to ‘Newton’s’ second law, an object will move with an acceleration that is proportional to the force applied to it. Thus, the more you blow a balloon up, the more force you create, and the faster or ‘stronger the balloon rocket should go!

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