It's classic science that's fun to do as a family or a team. Practise and challenge your friends! Download the Water bottle Rockets PDF(378 Kb). Adobe Acrobat is required. SAFETY: This rocket uses ...

Push the valve stem through the hole, again from the inside. Pour a small amount of water and some washing up liquid into the bottle. The amount isn't critical. Screw the bottle top valve on ...

Footage of a quick and easy trick you can use to empty a water bottle has people arguing in the comments section about the wonders of science. You learn something new every day on social media.