Fluids
Science

The buoyant force on an object is equal to the weight of fluid it displaces
Archimedes principle
The buoyant force on an object is equal to the weight of fluid it displaces. Archimedes' principle. This principle explains why objects float or sink in a fluid based on the weight of the fluid they push aside.

When a fluid's speed increases, its pressure decreases, like with air or water
Bernoullis principle
When a fluid's speed increases, its pressure decreases, like with air or water. Bernoulli's principle. This principle explains that in a flowing fluid, an increase in speed results in a decrease in pressure.

The pressure increase in a confined fluid is transmitted equally to all parts of the fluid
Pascals principle
The pressure increase in a confined fluid is transmitted equally to all parts of the fluid. Pascal's principle states that when pressure is applied to a fluid in a closed system, it is distributed evenly throughout the fluid.