Topic 4-6 Review Flashcards
Force
A push or a pull, or anything that causes a change in the motion of an object
Area
The amount of surface; measured in square units such as cm2
Pressure
The force acting perpendicular to a certain surface area
Pascal’s law
A law stating that when pressure is exerted on one part of a fluid, the same pressure is transmitted unchanged to all parts of the fluid, no matter what the shape of the container holding the fluid.
Hydraulic lift
A mechanical system that uses a liquid under pressure in
a closed system to raise heavy objects
Closed system
A system having a boundary that separates it from its surroundings
Hydraulic system
A device that transmits an applied force through a liquid to move something else by means of pressure
Pneumatic system
A system in which a gas, such as air, transmits a force exerted on the gas in an enclosed space
Valve
A device used to regulate the flow of a liquid in a hydraulic system
Pump
A machine used for raising or moving liquids
Subsystems
A secondary or subordinate system that is part of a larger
system
