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17 Cards in this Set

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Fluid Pressure
All forces exerted by the individual molecules in a fluid that add together to make up the pressure exerted
Bernoulli's Principle
States that the pressure exerted by a moving stream a fluid is less that the pressure of a surrounding fluid
SI unit of Pressure
Pascal PA or newton per square meter(N/m)
Pascal's Principal
When a force is applied to a confined fluid, an increase in pressure is transmitted equall to all parts of the fluid
fluid
a substance whose shape can
easily be change
Buoyancy
water exerts force called the buoyance force, this acts in the upward direction, against the force of the gravity, so it makes it feel lighter
Calculating Pressure
pressure= Force
Area
Archimedes Principle
States that the buoyant force on an object is equal to the weight of the fluid displaced by the object
Pressure/Fluid
The pressure within a fluid is
the same at any given level an exerted in all directions
Pascal's Principal
When force is applied to confined fluid, an increase in pressure is transmitted equally to all parts of the fluid
Pressure and Elevation
air pressure decreases
as elevation increases
Density
Density= Mass
Volume
Hydraulic System
Multiplies a force by applying the force to a small surfce area. the increase in pressure is then transmitted to another part of a confined fluid, which pushes on a larger surface area
Densities of substances
Change the density of a substance can make it float oer sink
pressure exerted by a fluid
all the forces exerted by the individual molecules in a fluid add together to make up the pressure exerted by the fluid
Pressure and Depth
Fluid pressure depends on depth.
Water pressure increases as
depth increases.
Sinking / Floating
An object that is more dense that the fluid which it is immeresed sinks. An object that is less dense that the fluid which it is immersed floats to the surface.