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Loco Motion 2
Simple Machines, Work, Pressure, Momentum, and Energy
12
Physics
8th Grade
03/08/2013

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Term
Kinetic Energy
Definition
energy that involves things moving: vehicles, atoms, etc.
Term
Potential energy
Definition
Energy that is stored: batteries, a container of gasoline, an object lifted into the air, etc.
Term
Work
Definition
Force x distance
Term
Energy
Definition
the ability to do work.
Term
Vacuum pump
Definition
a device that removes air from the inside of a container. Makes the pressure inside lower than the pressure outside.
Term
Simple Machine
Definition
a device that alters the force and distance relationship. There are 6 of them. Some are related to each other.
Term
Input force
Definition
Where energy is added to a simple machine
Term
Output force
Definition
Where work is obtained from the simple machine.
Term
Pressure
Definition
Force/Area
Air pressure gets lower as altitude rises
Water pressure gets higher as depth increases
See "vacuum," "buoyancy," and "Bernoulli's principle"
Term
Bernoulli's principle
Definition
the faster air travels, the _lower_ the pressure.
Term
Archimedes Principle
Definition
A floating object displaces its' mass in water.
Term
fulcrum
Definition
the pivot point in a simple machine that the rest of the lever rotates around
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