Shared Flashcard Set

Details

Forms of Energy
Science
14
Other
Not Applicable
10/30/2003

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Cards

Term
Machine
Definition
It is anything that helps you do work or make work easier
Term
Simple Machine
Definition
A machine with a few moving parts, making it easier to work
Term
Lever
Definition
A simple machine made of a rigid bar or plank and a fixed point called fulcrum
Term
Load
Definition
The object being lifted or moved by a machine
Term
Fulcrum
Definition
A fixed point that supports the bar of a lever and allows the bar to turn or pivot
Term
Effort Force
Definition
The amount of force needed to move something
Term
Pulley
Definition
A machine made up of a rope, belt, or chain wrapped around a wheel and axle
Term
Wheel and Axle
Definition
A simple machine made of a handle or axle attached to the center of a wheel
ex.
Ferris Wheel,
Doorknob,
Screwdriver.
Term
Inclined Plane
Definition
A straight slanted surface that is not moved when it is used
ex.
Ramp - used to move heavy stuff into
a truck.
Slide - used to slide things down.
Term
Wedge
Definition
Two inclined planes put back to back.
ex.
a zipper,
a Knife,
a Screw.
Term
Screw
Definition
An inclined plane twisted into a spiral
Term
Gears
Definition
Wheel with teeth that fit together used for transmiting or changing motion
Term
Compound Machine
Definition
A combination of two or more simple machines.
ex.
Scissors,
Bycycle.
Term
Efficiency
Definition
The measure of how much useful work a machine puts out compared to the amount of work put into it.
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