AIR PRESSURE

Whether or not an object will float is all a question of density. If an object is very dense, it means that there is a lot of mass in a small amount of space (or volume). Objects with low density will float on objects with a higher density – this is a very important principle when designing a kayak or a paddleboard, otherwise they would sink! Inflatable paddleboards are filled with air but this air is at a high pressure – that means it’s more dense than the air around you. In this experiment we’ll see how increasing the pressure on an air bubble can make it dense enough to sink!