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100
What is work?
When a force moves an object
100
what is a plane??
Any flat surface
100
what is an inclined plane?
a plane with one end higher than the other
100
what is a screw?
an inclined plane wrapped around a pole
100
what is a fulcrum
the point on which a lever rests
200
what is a force?
a push or a pull
200
how does a machine affect work?
it makes it faster, easier, and better
200
what is a wedge?
two inclined planes that come to a point to make lifting or splitting easier
200
what is a lever?
a bar that moves around a fulcrum
200
what is a wheel and axle?
a wheel with an axle through its center to move loads
300
Why is an inclined plane a special simple machine?
It doesn't move
300
what is a pulley?
A wheel with a groove for a rope that is used for lifting
300
what is a gear?
wheels with teeth that fit together
300
What is friction?
A force that slows down objects when they rub against each other
300
What is one way a screw works?
(lift, hold tight, grip, join)
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