Bernoulli's Equation

For "ideal" flow along a streamline with no change in height, an increase in velocity results from a decrease in static pressure.

Torricelli's law is theorem about the relation between the exit velocity of a fluid from a hole in a reservoir to the height of fluid above the hole.

The tendency of the surface of a liquid to resist a force and behave like a membrane and is a result of cohesion between liquid molecules.