According to Bernoulli's scientific principle, as air speed __________, it's pressure __________.

Bernoulli's principle states that in a streamline flow of fluid, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure or potential energy of the fluid. This principle can be applied to various scenarios, including the behavior of air as it moves over surfaces.

When air speed increases, particularly in situations such as airflow over an airplane wing, the pressure in that same region must decrease to maintain the continuity of flow. This relationship is fundamental in understanding how lift is generated in aviation, where faster airflow over the top of the wing results in lower pressure, thus allowing the wing to rise.

The other options represent misunderstandings of this principle. An increase in air speed would not lead to an increase in pressure, nor would a decrease in speed correspond to a decrease in pressure. Therefore, the connection established by Bernoulli’s principle is crucial—higher air speeds result in lower pressure, validating that as the speed of air increases, its pressure decreases.