What does Bernoulli's principle explain about fluid behavior?

Bernoulli's principle states that in a flowing fluid, an increase in the fluid's speed occurs simultaneously with a decrease in its pressure or potential energy. This relationship indicates that speed and pressure are indeed inversely related; when fluid moves faster, it exerts less pressure on the surfaces surrounding it.

In practical terms, if you take a narrow portion of a pipe (where the fluid speeds up), the pressure within that portion drops compared to areas where the fluid moves more slowly. This principle is fundamental in various applications such as in airplane wing designs, where air moving faster over the top surface creates lower pressure, contributing to lift.

Although other options may refer to various aspects of fluid dynamics, they do not accurately represent the key relationship described by Bernoulli's principle. This understanding underscores the significance of this principle in explaining how and why fluids behave in certain ways under varying conditions of speed and pressure.