Water Powered Rocket

Take science outdoors with the Water Powered Rocket, an exciting hands-on way to explore forces, motion, and pressure. Using just water, air, and a plastic bottle, this activity vividly demonstrates Newton’s Third Law of Motion — every action has an equal and opposite reaction — as the rocket soars skyward over 30 metres!

Learners will love experimenting with water levels and air pressure to test how high their rocket can go, while gaining a deeper understanding of physics principles like thrust, velocity, and propulsion. Perfect for school science projects, STEM days, or weekend backyard fun.

Why Educators Love It:

• Brings core physics concepts to life in a memorable, interactive way

• Encourages inquiry, prediction, and experimentation

• Ideal for STEM lessons, outdoor science activities, and group demonstrations

• Simple setup using common household items

• Inspires curiosity and excitement about science and engineering

How to Use It:

• Fill a 1.25L plastic bottle partially with water

• Connect the launch base and pump air into the bottle with a bicycle pump

• Watch as water shoots through the narrow opening, propelling the rocket high into the air

• Experiment with different water volumes or pressures to compare results

• Always launch in an open, wind-free area under adult supervision

Details:

• Demonstrates Newton’s Third Law of Motion in action

• Reaches heights of up to 30 metres

• Requires: 1.25L plastic soft-drink bottle and bicycle pump (not included)

• Fun, educational, and reusable outdoor STEM activity

• Suitable for ages 10+ with adult supervision

• Great for science fairs, physics units, and classroom demonstrations