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Science Fluid Stuff

Science fluid displacement, floating, sinking, density, and more

QuestionAnswer
weight the force of gravity acting on an object
mass the amount of matter that makes up an object or substance
volume the amount of space an object or substance takes up
displace to take the place of
density a measure of the mass per unit volume of a substance
characteristic property a property that makes a particular substance distinct from others
buoyancy the upward supportive force on an object in a fluid
swim bladder a controllable, balloon-like chamber that allows fish to alter their buoyancy
ballast tanks compartments in a ship or submarine that take in water to keep the ship stable or help a submarine dive below the surface
pressure (scientifi c defi nition) the force per unit area
pressure formula force/area
pressure measured in pascals(Pa)1 Pa = 1 N/m2
atmospheric pressure the force the atmosphere exerts on a unit of surface area
Pascal’s Law states that a force applied to a fluid is distributed equally through all parts of the fluid
compress to pack closely together; squeeze
compressibility the ability to be squeezed into a smaller volume
pneumatic system a system that uses gases under pressure
hydraulic system a system that uses liquids under pressure
Hydraulic and pneumatic fluid systems consist 1 a pump (sometimes including cylinders and pistons) forces fluids through a system • conductors (tubing, hoses, or pipes) provide a pathway to carry the fluid
Hydraulic and pneumatic fluid systems consist 2 valves keep the fluid moving in the desired direction at the desired time • a pressure gauge monitors pressure within the system Each component has its own job to do
density formula mass/volume
Created by: tart612