Unit 4 Flashcards
Daniel Bernoulli
\bur-NOOL-ee\
eighteenth-century Swiss physicist
Bernoulli’s Princilpe
fluid pressure decreases as velocity of fluid flow increases, and fluid pressure increases as velocity of fluid flow decreases
Blaise Pascal
\pahs-KAHL\
seventeenth-century French scientist
Pascal’s Principle
pressure is the same at all points in a confined fluid, and pressure applied to any point in a confined fluid is uniformly distributed throughout the fluid
Aerodynamics
\air-oh-di-NA-miks\
study of the forces exerted on and the flow around objects moving relative to a gas, particularly applied to aircraft moving through air; an aerodynamic design considers fluid-flow factors to ease movement of an object through a fluid
Air Pressure
the force exerted by the weight of a column of air above a given point
Buoyancy
\BOY-uhnt-see\
an object´s tendency to float or sink in a liquid
Density
a measure of how closely packed the particles in a substance are; the mass of an object divided by its volume
Drag
the phenomenon of frictional resistance to motion of an object through a fluid
Fluid
any substance capable of flowing; of the states of matter, only a solid is not a fluid (liquid, gas, and plasma are all fluids)
Friction
force of resistance acting between objects in contact and tending to dampen their motion
Hydraulic
operated, moved, or effected by means of water or other fluid
Pressure
the force applied to a unit area of surface
