Adobe Acrobat is required. SAFETY: This rocket uses air pressure to fling a bottle at high speed 20–50 metres. The bottle must be made entirely of plastic, it must have no sharp points and it ...

We do our best to take care of ourselves, but recent testing shows there’s a potentially harmful chemical that even our fresh ...

The problem with a lot of these water bottle rocket projects is that they leak where the bottle meets the launcher. In most cases this is a good thing as it’s almost impossible to build up ...

You can also improve the rocket's performance by using different ... in a volume that can't increase - the pressure inside the plastic tub rises. The physics that launches the Fizz Bang tub ...