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10 terms

Three Oaks third grade Simple Machines 1

STUDY
PLAY
Work
Something that is done when a force moves an object
Pulley
A wheel that has a rope wrapped around it. they are used to lift heavy objects.
Machine
A simple device that makes it easier to move something.
Screw
An inclined plane wrapped around a cylinder or cone. It holds objects together
Compound Machine
A combination of two or more simple machines.
Wedge
A piece of wood or metal that is wide at one end and pointed at the other to help cut or SPLIT things.
Inclined plane
A flat surface that is raised so one end is higher than the other.
Wheel and Axle
A rod attached to a wheel. It makes it easier to move or turn things.
Lever
A stiff bar that moves about a fixed point (fulcrum).
Force
any push or pull in a variety of directions

Flickr Creative Commons Images

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