There are lots of great air pressure demonstrations around, but a leaky water bottle is one of the simplest. It looks impressive and costs almost nothing.

Practise and challenge your friends! Download the Water bottle Rockets PDF(378 Kb). Adobe Acrobat is required. SAFETY: This rocket uses air pressure to fling a bottle at high speed 20–50 metres.

Balloon in a Bottle: There is no such thing as an empty bottle ... Light, Refraction, focal point Environmental Science,Earth Science,Physics, Demonstrating Air Pressure through Water in a Jar ...

Water exerts the pressure caused by its own weight and that of the air above it ... and so in all regular figures. In a bottle having a long narrow neck, the pressure is greatest on the base ...

At higher altitudes the weight of the air particles above the climber ... highest pressure at the bottom of the bottle. The Arrows show how the water pressure forces the water out of the bottle.

An curved arrow pointing right. The Fontus water bottle refills itself with condensed moisture in the air. While it isn't available for purchase yet, the company behind it made a video explaining ...

Why Do Water Bottles Explode on Planes ... even though the air feels about the same, it's at a lower pressure than the air inside your bottle. Air, or any gas/liquid, wants to go from high ...

Sidel has unveiled its StarLITE-R STILL bottle base aiming to ensure reduced blowing pressure, 100% recycled PET (rPET) ...