Fluids Under Pressure

Compress

Squeeze

Compressibility

Hydraulic

liquids

pump

fluids through a system

conductors

pathway to carry fluids

valves

keeps fluid moving at desired time/direction

pressure gauge

monitors pressure within a system

an object that is able to be squeezed into a smaller volume

Pneumatic

air

gases

pump

fluids through a system

conductors

pathway to carry fluids

valves

keep fluid moving at desired time/direction

pressure gauge

monitors pressure within a system

when liquids are under pressure, their volume decreases as well as a gas

but the decrease in the liquid is barely noticeable

this when using rigid containers

large amount of gas in a small volume and when
more gas particles are added, it creates collisions

causes the temperature to rise which makes the particles of a fluid move faster/farther apart. (fluid expands)

pressure

force per unit area

P = F/A

1 Pa = 1N/m2

atmospheric pressure

force exerted by the atmosphere

decreases the higher you ascend, because of the less air above you

water

exerts pressure

exerts more pressure than air

air

exerts pressure

Blaise Pascal

French mathematician & physicist

states that a force applied to a fluid is distrubuted equally through all parts of the fluid

the circulatory system is a closed hydraulic system

fluid filled. heart and blood vessels form a sealed
compartment in the body ( closed )

valves

devices that control the movement of a fluid through a
hollow tube or pipe

prevents blood from backing up/pooling in veins

internal combustion engine

a device that provides power by burning fuel
within its cylinders

we use fluids in every day life work

for example, backhoes
use hydraulic rams

similar to syringes

hoses/fire pumps

used to make fluids leave a system with great force
( under pressure )