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Fluids
Grade 8 Science - Mr. Collinson
24
Science
8th Grade
02/05/2020

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Term
Matter
Definition
Anything that has mass, takes up space, and is made of particles.
Term
Solid
Definition
The state of matter in which the substance has both a definite volume and a definite shape. Particles can not move around one another.
Term
Liquid
Definition
The state of matter in which the substance has a definite volume, but no definite shape. Particles move freely.
Term
Gas
Definition
The state of matter in which the substance has neither a definite volume nor a definite shape. Particles move rapidly and freely.
Term
Fluid
Definition
Any substance that flows. Can be a liquid or a gas.
Term
Viscosity
Definition
The measure of how fast a fluid will flow; the "thickness" or "thinness" of a fluid.
Term
Flow Rate
Definition
The volume of fluid that passes a point in a pipe or tube in a certain amount of time.
Term
Mass
Definition
The amount of matter in a substance.
Term
Weight
Definition
The force of gravity exerted on a mass.
Term
Density
Definition
The amount of mass in a certain unit volume of a substance (mass divided by volume).
Term
Average Density
Definition
The total mass of an object divided by the total volume.
Term
Buoyancy
Definition
The tendency to rise or float in a fluid.
Term
Force
Definition
A push or pull, or anything, that can cause a change in motion.
Term
Gravity
Definition
The attractive force between masses.
Term
Capacity
Definition
The largest amount that can be held by a container.
Term
Pressure
Definition
The force acting perpendicular to a surface area.
Term
Compressibility
Definition
The ability to be squeezed into a smaller volume.
Term
Compressible
Definition
Capable of being squeezed into a smaller volume.
Term
Incompressible
Definition
Not capable of being squeezed into a smaller volume.
Term
Hydraulics
Definition
The study of pressure in liquids.
Term
Pneumatics
Definition
The study of pressure in gases.
Term
Pump
Definition
A device that moves a fluid through a hose, pipe or into a container.
Term
Compressor
Definition
A device that compresses air.
Term
Balanced Forces
Definition
When all the forces on an object are equal and opposite, such that the movement will not change.
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