How to Understand Underwater Pressure in Scuba Diving

Video Transcript

"This is how we understand pressure when scuba diving. When we're at the surface, we're actually going to be at one atmosphere. When we go down to depth, at thirty three feet, we're now going to be at two atmospheres. At sixty six feet, you'd be at three atmospheres. Now, what happens to the volume as we actually go under the water, is, at thirty three feet we'd actually be half the volume. And when we're at sixty six feet, you'd be at a third of the volume. So these are examples of what's happening to the density as we go underwater, as well. If we had the same size container, it would become more dense as we get deeper. So when we're at the surface, it's actually going to be more like cotton candy as far as the density of the molecules. When we're at depth, like, let's say a hundred and thirty feet, it's going to be more dense, like a sugar cube."