What Is A Water Rocket?
As you can see from the video, a water rocket is simply a cola bottle pressurized with water and air.
It’s also commonly called the “water bottle rocket” because any carbonated bottle can be used as the body of the water rocket.
The rocket in the video is an inverted 2 litres coke bottle filled with 500ml of tap water and attached to a bicycle pump.
The coke bottle have fins attached to make it balanced so that
it can fly upwards into the sky.
The coke bottle is attached to a bicycle pump creating an air tight
connection. As the boys starts to pump air into the bottle, air cannot escape and thus pressurized inside the bottle.
This creates a great source of potential energy which when released, will propel the bottle high up into the sky.