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14 terms

Simple Machines

STUDY
PLAY
axle
a bar that goes through the center of a wheel
fixed pulley
a pulley that stays attached in one place
force
A push, pull or lift
fulcrum
the object that a lever rests on
gear
a wheel with bumps around its edge
gravity
the force that pulls everything toward the earth.
inclined planes
a flat surface with one end higher than the other.
lever
a stiff bar used to push,pull,or lift an object
pulleys
a wheel that has a rope looped around it. The rope fits in a groove that runs around the edge of the wheel
screw
a simple mahcine that looks like a nail with ridges on it.
simple machines
a machine with few moving parts
wedge
two inclined planes put together. Nails and shovels are wedges
wheel
a round object that turns on an axle
work
using force to move an object from one place to another