Water Rokit brings science alive for children of all ages
Inspiring the next generation in STEM through Junior Rocketry
Our Education Resource Portal has been designed to provide teachers, group leaders and all STEM ambassadors with exciting activity content.
From simple Words of the Week through to quick Lessons and more detailed Sessions, there is something for everyone!
The Lessons and Sessions cover a number of subjects relating to Science, Engineering, Rocketry and Space.
Our first Lessons focus on Newton’s Laws of Motion and Gravity, and Energy stores. With further Sessions in development on The Artemis Missions and other exciting NASA and SpaceX Projects.
Get your Water Rokit
Available from education suppliers, science museums and shops throughout the world. Or buy today in our online store with different education packs available to suit your size of classroom.
- Original Water Rokit kit, single and multi-buy saver packs
- Water Rokit Tail Only kit, single and multi-buy saver packs
- Yellow Launch Tube Only kit
- Full spares / replacement ordering service
11%
The Original Water Rokit
Water Rokit Multipack - ideal for education and groups5 Pack
Original price was: £69.75.£62.00Current price is: £62.00.
The Original Water Rokit
Complete KitSingle
£13.95
Latest Education News
Charlotte is fantastic and always on hand for support and offering fresh exciting ideas to use the kits in our sessions, thank you!"
St. Ives School
Imperial College London
STEM Learning
I have never looked for another water rocket!
Kents Hill Park School
Australian National Centre for the Public Awareness of Science
The kit is sturdy and, so long as you follow the very clear instructions, launch really high, every time. The kits last for years, in fact, we've never broken one of our numerous kits and only have to replace them if they get stuck in trees! The website has a great selection of spares and the team at Water Rokit are very helpful.
Maths + Science = Engineering + Water = Fun
Since the birth of Water Rokit in 1983, we have been exciting rocketeers and space cadets into learning about rockets and science. A British family-owned company passionate about bringing science alive for children and schools throughout the world.
- A precision water rocket that self-launches at a pre-determined pressure (25psi), providing the capability of repeatable experiments.
- Schools, colleges and Science Advisors throughout the world are using this exciting kit to demonstrate the Laws of Motion.
- A valuable visual tool for all levels of science education.
How Water Rokit works
Water Rokit has been designed to launch itself automatically at a set pressure, and is engineered to do this repeatedly. This makes Water Rokit perfect to perform science experiments such as exploring Newton’s Laws of Motion, acceleration and trajectory.
The original Water Rokit is a visual, safe and hands-on product which promotes fun and enthusiasm when teaching children of all ages – it’s why so many schools throughout the world have used Water Rokit as part of their core curriculum since way back in 1983.
The Science of Water Rokit
A squid propels itself by filling its body with water and ejecting it backwards in order to move forwards. This is the principle used by rocket engineers. Space rockets use fuels that are burned in a chamber shaped rather like a bottle, with the neck pointing backwards. The burning fuel produces a large quantity of gas that is further expanded by the heat generated, and this is ejected through the neck (or nozzle) of the “bottle” (normally called the combustion chamber) at a very high velocity, propelling the rocket in the opposite direction.
The Water Rokit, like the squid, uses water as the driving agent, and compressed air instead of heat to provide the energy.
At launch (just before the brass bung automatically releases) the pressure in the bottle is around 18 x 104 N/m2 (or about 25psi). The water is forced through a nozzle with a cross sectional area of about 1cm2, and this produces a theoretical thrust of around 18 Newtons (about 3.9lbs). As the water is ejected, the Water Rokit gets lighter in weight resulting in an increased acceleration or ‘G’ force. Unlike a space rocket, this period of acceleration happens very quickly, taking approximately 1 second for the water to be fully ejected, at around 3 metres (10 feet) of distance travelled. At this height, the Water Rokit is accelerating at about 9 metres per second (around 20 miles per hour), providing enough energy for the Water Rokit to fly upwards to 30 metres (100 feet).