a diver swimming at a depth of 10m under the water observes that the size of his air bubbles increase in volume as they rise to the waters surface. which gas law does this relate to?

Boyle's Law I think

Boyle's Law is correct.

The observation of the diver's air bubbles increasing in volume as they rise to the water's surface is related to a gas law known as Boyle's law. Boyle's law states that at a constant temperature, the pressure of a gas is inversely proportional to its volume. In other words, as the volume of a gas decreases, its pressure increases, and vice versa.

To understand why the diver's air bubbles increase in volume as they rise, we need to consider the relationship between pressure and depth underwater. The deeper the diver goes, the higher the pressure of the water above them. This increased pressure compresses the air bubbles, reducing their volume. As the diver ascends towards the surface, the pressure decreases, allowing the air bubbles to expand and increase in volume.

So, the change in the size of the bubbles can be explained by Boyle's law, which describes the relationship between the pressure and volume of a gas.