Science 8
Work, Power & Simple Machines
Vocabulary Flashcards
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PB
2007
Machine
Work
Power
Mechanical
Advantage
A device that makes
work easier by
changing the size or
the direction of force
Occur when a force
is used to move an
object through a
distance
Comparison of how
much work a
machine can do in a
unit of time
How many times a
simple machine
multiplies the force put
into it
Wedge
Pulley
Wheel & Axle
Inclined Plane
Simple machine
consisting of an
inclined plane that
moves
Simple machine
consisting of one or
more wheels with a
rope wrapped around
them
Simple machine
made of larger circle
rotation around
smaller circle
Simple machine that
consists of a flat,
sloping surface
Lever
Simple machine made
of a long rigid bar that
rests on and turns
around a support
Screw
Simple machine
consisting of an
inclined plane wrapped
around a cylinder